61 files changed, 393 insertions, 0 deletions
diff --git a/browser/branding/nightly/PrivateBrowsing_150.png b/browser/branding/nightly/PrivateBrowsing_150.png
new file mode 100644
index 0000000000..af676d1b5f
--- /dev/null
+++ b/browser/branding/nightly/PrivateBrowsing_150.png
diff --git a/browser/branding/nightly/PrivateBrowsing_70.png b/browser/branding/nightly/PrivateBrowsing_70.png
new file mode 100644
index 0000000000..5e5f57687c
--- /dev/null
+++ b/browser/branding/nightly/PrivateBrowsing_70.png
diff --git a/browser/branding/nightly/VisualElements_150.png b/browser/branding/nightly/VisualElements_150.png
new file mode 100644
index 0000000000..fa21911461
--- /dev/null
+++ b/browser/branding/nightly/VisualElements_150.png
diff --git a/browser/branding/nightly/VisualElements_70.png b/browser/branding/nightly/VisualElements_70.png
new file mode 100644
index 0000000000..cefb95b1c3
--- /dev/null
+++ b/browser/branding/nightly/VisualElements_70.png
diff --git a/browser/branding/nightly/background.png b/browser/branding/nightly/background.png
new file mode 100644
index 0000000000..dc07244f01
--- /dev/null
+++ b/browser/branding/nightly/background.png
diff --git a/browser/branding/nightly/branding.nsi b/browser/branding/nightly/branding.nsi
new file mode 100644
index 0000000000..b37853b776
--- /dev/null
+++ b/browser/branding/nightly/branding.nsi
@@ -0,0 +1,64 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# NSIS branding defines for nightly builds.
+# The official release build branding.nsi is located in other-license/branding/firefox/
+# The unofficial build branding.nsi is located in browser/branding/unofficial/
+
+# BrandFullNameInternal is used for some registry and file system values
+# instead of BrandFullName and typically should not be modified.
+!define BrandFullNameInternal "Nightly"
+!define BrandFullName         "Firefox Nightly"
+!define CompanyName           "mozilla.org"
+!define URLInfoAbout          "https://www.mozilla.org"
+!define HelpLink              "https://support.mozilla.org"
+
+!define URLStubDownloadX86 "https://download.mozilla.org/?os=win&lang=${AB_CD}&product=firefox-nightly-latest"
+!define URLStubDownloadAMD64 "https://download.mozilla.org/?os=win64&lang=${AB_CD}&product=firefox-nightly-latest"
+!define URLStubDownloadAArch64 "https://download.mozilla.org/?os=win64-aarch64&lang=${AB_CD}&product=firefox-nightly-latest"
+!define URLManualDownload "https://www.mozilla.org/${AB_CD}/firefox/installer-help/?channel=nightly&installer_lang=${AB_CD}"
+!define URLSystemRequirements "https://www.mozilla.org/firefox/system-requirements/"
+!define Channel "nightly"
+
+# The installer's certificate name and issuer expected by the stub installer
+!define CertNameDownload   "Mozilla Corporation"
+!define CertIssuerDownload "DigiCert SHA2 Assured ID Code Signing CA"
+
+# Dialog units are used so the UI displays correctly with the system's DPI
+# settings.
+!define PROFILE_CLEANUP_LABEL_TOP "35u"
+!define PROFILE_CLEANUP_LABEL_LEFT "0"
+!define PROFILE_CLEANUP_LABEL_WIDTH "100%"
+!define PROFILE_CLEANUP_LABEL_HEIGHT "80u"
+!define PROFILE_CLEANUP_LABEL_ALIGN "center"
+!define PROFILE_CLEANUP_CHECKBOX_LEFT "center"
+!define PROFILE_CLEANUP_CHECKBOX_WIDTH "100%"
+!define PROFILE_CLEANUP_BUTTON_LEFT "center"
+!define INSTALL_BLURB_TOP "137u"
+!define INSTALL_BLURB_WIDTH "60u"
+!define INSTALL_FOOTER_TOP "-48u"
+!define INSTALL_FOOTER_WIDTH "250u"
+!define INSTALL_INSTALLING_TOP "70u"
+!define INSTALL_INSTALLING_LEFT "0"
+!define INSTALL_INSTALLING_WIDTH "100%"
+!define INSTALL_PROGRESS_BAR_TOP "112u"
+!define INSTALL_PROGRESS_BAR_LEFT "20%"
+!define INSTALL_PROGRESS_BAR_WIDTH "60%"
+!define INSTALL_PROGRESS_BAR_HEIGHT "12u"
+
+!define PROFILE_CLEANUP_CHECKBOX_TOP_MARGIN "20u"
+!define PROFILE_CLEANUP_BUTTON_TOP_MARGIN "20u"
+!define PROFILE_CLEANUP_BUTTON_X_PADDING "40u"
+!define PROFILE_CLEANUP_BUTTON_Y_PADDING "4u"
+
+# Font settings that can be customized for each channel
+!define INSTALL_HEADER_FONT_SIZE 28
+!define INSTALL_HEADER_FONT_WEIGHT 400
+!define INSTALL_INSTALLING_FONT_SIZE 28
+!define INSTALL_INSTALLING_FONT_WEIGHT 400
+
+# UI Colors that can be customized for each channel
+!define COMMON_TEXT_COLOR 0xFFFFFF
+!define COMMON_BACKGROUND_COLOR 0x000000
+!define INSTALL_INSTALLING_TEXT_COLOR 0xFFFFFF
diff --git a/browser/branding/nightly/configure.sh b/browser/branding/nightly/configure.sh
new file mode 100644
index 0000000000..7c7f2cf8c8
--- /dev/null
+++ b/browser/branding/nightly/configure.sh
@@ -0,0 +1,6 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+MOZ_APP_DISPLAYNAME="Firefox Nightly"
+MOZ_MACBUNDLE_ID=nightly
diff --git a/browser/branding/nightly/content/about-logo-private.png b/browser/branding/nightly/content/about-logo-private.png
new file mode 100644
index 0000000000..9f64352dbe
--- /dev/null
+++ b/browser/branding/nightly/content/about-logo-private.png
diff --git a/browser/branding/nightly/content/about-logo-private@2x.png b/browser/branding/nightly/content/about-logo-private@2x.png
new file mode 100644
index 0000000000..1949b437e4
--- /dev/null
+++ b/browser/branding/nightly/content/about-logo-private@2x.png
diff --git a/browser/branding/nightly/content/about-logo.png b/browser/branding/nightly/content/about-logo.png
new file mode 100644
index 0000000000..de2404af05
--- /dev/null
+++ b/browser/branding/nightly/content/about-logo.png
diff --git a/browser/branding/nightly/content/about-logo.svg b/browser/branding/nightly/content/about-logo.svg
new file mode 100644
index 0000000000..caf587e212
--- /dev/null
+++ b/browser/branding/nightly/content/about-logo.svg
@@ -0,0 +1 @@
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+\ No newline at end of file
diff --git a/browser/branding/nightly/content/about-logo@2x.png b/browser/branding/nightly/content/about-logo@2x.png
new file mode 100644
index 0000000000..1df472e725
--- /dev/null
+++ b/browser/branding/nightly/content/about-logo@2x.png
diff --git a/browser/branding/nightly/content/about-wordmark.svg b/browser/branding/nightly/content/about-wordmark.svg
new file mode 100644
index 0000000000..f21d4fc9f0
--- /dev/null
+++ b/browser/branding/nightly/content/about-wordmark.svg
@@ -0,0 +1,17 @@
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+<svg xmlns="http://www.w3.org/2000/svg" width="336" height="64" viewBox="0 0 336 64">
+  <defs>
+    <linearGradient id="a" x1="-10%" y1="45%" x2="110%" y2="55%">
+      <stop offset="0" stop-color="#54ffbd"/>
+      <stop offset=".45" stop-color="#0df"/>
+      <stop offset=".7" stop-color="#58c2ff"/>
+      <stop offset=".9" stop-color="#aba8ff"/>
+      <stop offset="1" stop-color="#cb9eff"/>
+    </linearGradient>
+  </defs>
+  <path d="M11.341 54.816l-7.026-10.6H1v15.57h3.008V48.843l7.245 10.943h3.074V44.213h-2.986zm6.518 4.97H21V44.213h-3.14zm14.007-6.058h5.094a4.376 4.376 0 0 1-4.567 3.37A5.011 5.011 0 0 1 27.167 52a5.086 5.086 0 0 1 5.182-5.142 4.882 4.882 0 0 1 4.237 2.155l2.614-1.771A8.279 8.279 0 0 0 32.349 44a8.006 8.006 0 1 0 .088 16 7.621 7.621 0 0 0 7.86-7.787v-1.3h-8.431zm20.965-3.243h-6.478v-6.272h-3.117v15.573h3.117v-6.357h6.478v6.357h3.095V44.213h-3.095zm6.035-3.5h4.458v12.8h3.052v-12.8h4.412v-2.772H58.866zm17.979-2.773h-3.117v15.574h10.516v-2.922h-7.4zm16.774 0L90 50.4l-3.623-6.187h-3.4l5.445 9v6.57h3.117V53.28L97 44.213z" fill="url(#a)"/>
+  <path d="M1 3.879h21.427v5.8H7.147v7.859h15.28v5.752H7.147v12.642H1zM29.716 1.64a3.447 3.447 0 0 1 3.557 3.6 3.434 3.434 0 0 1-3.6 3.6 3.4 3.4 0 0 1-3.556-3.513 3.555 3.555 0 0 1 3.599-3.687zm-3.03 10.582h6.06v23.71h-6.06zm23.623 6.586a4.894 4.894 0 0 0-2.942-1.054c-2.459 0-3.864 1.581-3.864 5.049v13.129h-6.015v-23.71h5.752v3.424A5.649 5.649 0 0 1 48.9 12a7.191 7.191 0 0 1 4.04 1.229zm2.5 5.4a12.129 12.129 0 0 1 12.209-12.469c7.113 0 12.163 5.049 12.163 12.074v2.5H58.739c.659 2.986 2.986 4.962 6.543 4.962a6.355 6.355 0 0 0 5.883-3.513l5.05 3.03c-2.5 3.688-6.059 5.62-11.109 5.62-7.684.003-12.294-5.134-12.294-12.204zm6.015-2.678H71.3c-.658-3.03-3.117-4.7-6.323-4.7a6.091 6.091 0 0 0-6.15 4.7zm19.847-9.308h4.259v-1.186c0-6.455 2.722-9.133 8.694-9.133h2.107v5.225h-1.709c-2.81 0-3.425.966-3.425 3.908v1.186h5.137v5.444h-5v18.266h-5.8V17.666h-4.26zm16.2 11.855a12.139 12.139 0 0 1 12.382-12.338 12.338 12.338 0 1 1 0 24.676 11.959 11.959 0 0 1-12.377-12.338zm18.88 0a6.5 6.5 0 1 0-13 0 6.5 6.5 0 1 0 13 0zm14.051-.264l-8.562-11.591h7.113l5.05 7.288 5.181-7.288h6.981l-8.694 11.547 9.133 12.163h-7.064l-5.664-7.732-5.489 7.728h-7.069z" fill="#fff"/>
+  <path d="M179.043 19.377a7.41 7.41 0 0 0 4.266-6.948c0-5.189-3.958-8.532-9.939-8.532h-13.721V36h14.161c6.068 0 10.158-3.43 10.158-9.059a7.711 7.711 0 0 0-4.925-7.564zM163.3 7.24h10.027c3.913 0 6.332 2.111 6.332 5.189s-2.11 5.365-6.024 5.365H163.3zm10.467 25.374H163.3V21.18h10.29c4.4 0 6.685 2.331 6.685 5.717 0 3.342-2.551 5.717-6.509 5.717zM191.8 16.738v-4.485h-3.475V36h3.563V22.983c0-5.233 2.286-7.52 6.244-7.52a5.2 5.2 0 0 1 2.9.748l1.495-3.43a7.752 7.752 0 0 0-3.957-.88 6.576 6.576 0 0 0-6.77 4.837zm23.22-4.968a12.192 12.192 0 0 0-12.313 12.357 12.335 12.335 0 1 0 24.67 0 12.2 12.2 0 0 0-12.359-12.357zm0 21.284a8.606 8.606 0 0 1-8.663-8.927 8.69 8.69 0 1 1 17.371 0 8.642 8.642 0 0 1-8.71 8.927zm41.3-2.112l-7.081-18.689h-3.342l-7.256 18.821-5.981-18.821h-3.782L236.657 36h3.518l7.3-18.821 7.3 18.821h3.254l8.224-23.747h-3.738zm22.649-8.663c-3.694-.747-6.553-1.231-6.553-3.693 0-2.2 1.5-3.782 5.146-3.782a7.666 7.666 0 0 1 6.509 3.166l2.99-2.023a11.483 11.483 0 0 0-9.5-4.221c-5.629-.044-8.839 3.21-8.839 6.9 0 4.749 4.353 5.849 8.443 6.64 3.474.7 6.728 1.231 6.728 3.87 0 2.375-1.935 4.133-5.629 4.133a8.77 8.77 0 0 1-7.651-3.87l-3.123 2.112c2.111 3.034 5.5 4.968 10.686 4.968 6.2.044 9.367-3.649 9.367-7.387-.004-4.877-4.489-6.021-8.579-6.813zm23.92-10.509a12.179 12.179 0 0 0-12.4 12.445c0 6.948 4.925 12.268 12.533 12.268a12.2 12.2 0 0 0 11.038-6.024l-3.078-1.8a8.489 8.489 0 0 1-7.96 4.573c-5.013 0-8.488-3.209-9.015-7.739h20.977v-1.631a11.714 11.714 0 0 0-12.095-12.092zm-8.8 10.553a8.821 8.821 0 0 1 8.8-7.344 8 8 0 0 1 8.4 7.344zM329.541 11.9a6.575 6.575 0 0 0-6.772 4.837v-4.484h-3.475V36h3.563V22.983c0-5.233 2.286-7.52 6.244-7.52a5.2 5.2 0 0 1 2.9.748l1.5-3.43a7.754 7.754 0 0 0-3.96-.881z" fill="#fff"/>
+</svg>
diff --git a/browser/branding/nightly/content/about.png b/browser/branding/nightly/content/about.png
new file mode 100644
index 0000000000..29cecfc95b
--- /dev/null
+++ b/browser/branding/nightly/content/about.png
diff --git a/browser/branding/nightly/content/aboutDialog.css b/browser/branding/nightly/content/aboutDialog.css
new file mode 100644
index 0000000000..2dcdd22cfa
--- /dev/null
+++ b/browser/branding/nightly/content/aboutDialog.css
@@ -0,0 +1,46 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#aboutDialogContainer {
+  background-color: #20123a;
+  color: #fff;
+  color-scheme: dark;
+}
+
+#clientBox {
+  padding: 10px 0 15px;
+}
+
+#leftBox {
+  background-image: url("chrome://branding/content/about-logo.png");
+  background-repeat: no-repeat;
+  background-size: 192px auto;
+  background-position: center 20%;
+  /* min-width and min-height create room for the logo */
+  min-width: 210px;
+  min-height: 210px;
+  margin-top: 20px;
+  margin-inline-start: 30px;
+}
+
+@media (min-resolution: 2dppx) {
+  #leftBox {
+    background-image: url("chrome://branding/content/about-logo@2x.png");
+  }
+}
+
+.text-link {
+  color: #fff !important;
+  text-decoration: underline;
+}
+
+#rightBox {
+  margin-inline: 30px;
+  padding-top: 64px;
+}
+
+#bottomBox {
+  background-color: hsla(235, 43%, 10%, .5);
+  padding: 15px 10px 15px;
+}
diff --git a/browser/branding/nightly/content/firefox-wordmark.svg b/browser/branding/nightly/content/firefox-wordmark.svg
new file mode 100644
index 0000000000..65270a3cd9
--- /dev/null
+++ b/browser/branding/nightly/content/firefox-wordmark.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="172" height="42"><path fill="context-fill #20123a" d="M.19 2.82h25.72v7H7.57v9.43h18.34v6.9H7.57v15.14H.19zM34.65.13a4.14 4.14 0 0 1 4.27 4.33 4.12 4.12 0 0 1-4.32 4.32 4.09 4.09 0 0 1-4.27-4.22A4.27 4.27 0 0 1 34.65.13zM31 12.83h7.27v28.46H31zm28.35 7.91a5.89 5.89 0 0 0-3.53-1.27c-3 0-4.64 1.9-4.64 6.06v15.76H44V12.83h6.9v4.11a6.79 6.79 0 0 1 6.8-4.37A8.69 8.69 0 0 1 62.53 14zm3 6.48c0-8.17 6.06-15 14.65-15s14.59 6.06 14.59 14.49v3H69.48c.79 3.58 3.58 6 7.85 6a7.62 7.62 0 0 0 7.06-4.21l6.06 3.63c-3 4.43-7.27 6.75-13.33 6.75-9.22-.01-14.75-6.18-14.75-14.66zM69.59 24h15c-.79-3.63-3.74-5.63-7.59-5.63A7.31 7.31 0 0 0 69.59 24zM93.4 12.83h5.11v-1.42c0-7.75 3.27-11 10.44-11h2.53v6.31h-2.06c-3.37 0-4.11 1.16-4.11 4.69v1.42h6.17v6.54h-6v21.92h-7V19.37H93.4zm19.45 14.23a14.56 14.56 0 0 1 14.85-14.81 14.81 14.81 0 1 1 0 29.62c-8.85 0-14.85-6.49-14.85-14.81zm22.65 0a7.8 7.8 0 1 0-15.59 0 7.8 7.8 0 1 0 15.59 0zm16.86-.32l-10.27-13.91h8.53l6.06 8.75 6.22-8.75h8.38l-10.43 13.86 11 14.6h-8.49L156.53 32l-6.59 9.28h-8.48z"/></svg>
+\ No newline at end of file
diff --git a/browser/branding/nightly/content/jar.mn b/browser/branding/nightly/content/jar.mn
new file mode 100644
index 0000000000..d623a6a2b3
--- /dev/null
+++ b/browser/branding/nightly/content/jar.mn
@@ -0,0 +1,21 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+browser.jar:
+% content branding %content/branding/ contentaccessible=yes
+  content/branding/about.png
+  content/branding/about-logo.png
+  content/branding/about-logo.svg
+  content/branding/about-logo@2x.png
+  content/branding/about-logo-private.png
+  content/branding/about-logo-private@2x.png
+  content/branding/about-wordmark.svg
+  content/branding/document.ico                  (../document.ico)
+  content/branding/firefox-wordmark.svg
+  content/branding/icon16.png                    (../default16.png)
+  content/branding/icon32.png                    (../default32.png)
+  content/branding/icon48.png                    (../default48.png)
+  content/branding/icon64.png                    (../default64.png)
+  content/branding/icon128.png                   (../default128.png)
+  content/branding/aboutDialog.css
diff --git a/browser/branding/nightly/content/moz.build b/browser/branding/nightly/content/moz.build
new file mode 100644
index 0000000000..d988c0ff9b
--- /dev/null
+++ b/browser/branding/nightly/content/moz.build
@@ -0,0 +1,7 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+JAR_MANIFESTS += ["jar.mn"]
diff --git a/browser/branding/nightly/default128.png b/browser/branding/nightly/default128.png
new file mode 100644
index 0000000000..8fe085c56f
--- /dev/null
+++ b/browser/branding/nightly/default128.png
diff --git a/browser/branding/nightly/default16.png b/browser/branding/nightly/default16.png
new file mode 100644
index 0000000000..e01114ba2b
--- /dev/null
+++ b/browser/branding/nightly/default16.png
diff --git a/browser/branding/nightly/default22.png b/browser/branding/nightly/default22.png
new file mode 100644
index 0000000000..0527dfd563
--- /dev/null
+++ b/browser/branding/nightly/default22.png
diff --git a/browser/branding/nightly/default24.png b/browser/branding/nightly/default24.png
new file mode 100644
index 0000000000..019d020fde
--- /dev/null
+++ b/browser/branding/nightly/default24.png
diff --git a/browser/branding/nightly/default256.png b/browser/branding/nightly/default256.png
new file mode 100644
index 0000000000..d0d8bd01cc
--- /dev/null
+++ b/browser/branding/nightly/default256.png
diff --git a/browser/branding/nightly/default32.png b/browser/branding/nightly/default32.png
new file mode 100644
index 0000000000..c0986eae93
--- /dev/null
+++ b/browser/branding/nightly/default32.png
diff --git a/browser/branding/nightly/default48.png b/browser/branding/nightly/default48.png
new file mode 100644
index 0000000000..1980ffb35c
--- /dev/null
+++ b/browser/branding/nightly/default48.png
diff --git a/browser/branding/nightly/default64.png b/browser/branding/nightly/default64.png
new file mode 100644
index 0000000000..551c98d444
--- /dev/null
+++ b/browser/branding/nightly/default64.png
diff --git a/browser/branding/nightly/disk.icns b/browser/branding/nightly/disk.icns
new file mode 100644
index 0000000000..323c8a8a69
--- /dev/null
+++ b/browser/branding/nightly/disk.icns
diff --git a/browser/branding/nightly/document.icns b/browser/branding/nightly/document.icns
new file mode 100644
index 0000000000..8cb0f7f9dc
--- /dev/null
+++ b/browser/branding/nightly/document.icns
diff --git a/browser/branding/nightly/document.ico b/browser/branding/nightly/document.ico
new file mode 100644
index 0000000000..e5d0d840a7
--- /dev/null
+++ b/browser/branding/nightly/document.ico
diff --git a/browser/branding/nightly/document_pdf.ico b/browser/branding/nightly/document_pdf.ico
new file mode 100644
index 0000000000..d6fe7c5bde
--- /dev/null
+++ b/browser/branding/nightly/document_pdf.ico
diff --git a/browser/branding/nightly/dsstore b/browser/branding/nightly/dsstore
new file mode 100644
index 0000000000..6b82c923a6
--- /dev/null
+++ b/browser/branding/nightly/dsstore
diff --git a/browser/branding/nightly/firefox.VisualElementsManifest.xml b/browser/branding/nightly/firefox.VisualElementsManifest.xml
new file mode 100644
index 0000000000..85e09dd7a9
--- /dev/null
+++ b/browser/branding/nightly/firefox.VisualElementsManifest.xml
@@ -0,0 +1,12 @@
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this file,
+   - You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
+<Application xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
+  <VisualElements
+      ShowNameOnSquare150x150Logo='on'
+      Square150x150Logo='browser\VisualElements\VisualElements_150.png'
+      Square70x70Logo='browser\VisualElements\VisualElements_70.png'
+      ForegroundText='light'
+      BackgroundColor='#20123a'/>
+</Application>
diff --git a/browser/branding/nightly/firefox.icns b/browser/branding/nightly/firefox.icns
new file mode 100644
index 0000000000..d820967d9e
--- /dev/null
+++ b/browser/branding/nightly/firefox.icns
diff --git a/browser/branding/nightly/firefox.ico b/browser/branding/nightly/firefox.ico
new file mode 100644
index 0000000000..240b64298f
--- /dev/null
+++ b/browser/branding/nightly/firefox.ico
diff --git a/browser/branding/nightly/firefox64.ico b/browser/branding/nightly/firefox64.ico
new file mode 100644
index 0000000000..1f50606af6
--- /dev/null
+++ b/browser/branding/nightly/firefox64.ico
diff --git a/browser/branding/nightly/locales/en-US/brand.ftl b/browser/branding/nightly/locales/en-US/brand.ftl
new file mode 100644
index 0000000000..86770b0374
--- /dev/null
+++ b/browser/branding/nightly/locales/en-US/brand.ftl
@@ -0,0 +1,27 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+## Firefox and Mozilla Brand
+##
+## Firefox and Mozilla must be treated as a brand.
+##
+## They cannot be:
+## - Transliterated.
+## - Translated.
+##
+## Declension should be avoided where possible, leaving the original
+## brand unaltered in prominent UI positions.
+##
+## For further details, consult:
+## https://mozilla-l10n.github.io/styleguides/mozilla_general/#brands-copyright-and-trademark
+
+-brand-shorter-name = Nightly
+-brand-short-name = Nightly
+-brand-shortcut-name = Firefox Nightly
+-brand-full-name = Firefox Nightly
+# This brand name can be used in messages where the product name needs to
+# remain unchanged across different versions (Nightly, Beta, etc.).
+-brand-product-name = Firefox
+-vendor-short-name = Mozilla
+trademarkInfo = { " " }
diff --git a/browser/branding/nightly/locales/en-US/brand.properties b/browser/branding/nightly/locales/en-US/brand.properties
new file mode 100644
index 0000000000..e84fdd07d4
--- /dev/null
+++ b/browser/branding/nightly/locales/en-US/brand.properties
@@ -0,0 +1,7 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+brandShorterName=Nightly
+brandShortName=Nightly
+brandFullName=Firefox Nightly
diff --git a/browser/branding/nightly/locales/jar.mn b/browser/branding/nightly/locales/jar.mn
new file mode 100644
index 0000000000..c903766a5c
--- /dev/null
+++ b/browser/branding/nightly/locales/jar.mn
@@ -0,0 +1,12 @@
+#filter substitution
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+[localization] @AB_CD@.jar:
+  branding                                          (en-US/**/*.ftl)
+
+@AB_CD@.jar:
+% locale branding @AB_CD@ %locale/branding/
+# Nightly branding only exists in en-US
+  locale/branding/brand.properties (en-US/brand.properties)
diff --git a/browser/branding/nightly/locales/moz.build b/browser/branding/nightly/locales/moz.build
new file mode 100644
index 0000000000..fff7035065
--- /dev/null
+++ b/browser/branding/nightly/locales/moz.build
@@ -0,0 +1,9 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DEFINES["MOZ_DISTRIBUTION_ID_UNQUOTED"] = CONFIG["MOZ_DISTRIBUTION_ID"]
+
+JAR_MANIFESTS += ["jar.mn"]
diff --git a/browser/branding/nightly/moz.build b/browser/branding/nightly/moz.build
new file mode 100644
index 0000000000..dd081ac444
--- /dev/null
+++ b/browser/branding/nightly/moz.build
@@ -0,0 +1,13 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ["content", "locales"]
+
+DIST_SUBDIR = "browser"
+export("DIST_SUBDIR")
+
+include("../branding-common.mozbuild")
+FirefoxBranding()
diff --git a/browser/branding/nightly/msix/Assets/Document44x44.png b/browser/branding/nightly/msix/Assets/Document44x44.png
new file mode 100644
index 0000000000..0d4e7915b8
--- /dev/null
+++ b/browser/branding/nightly/msix/Assets/Document44x44.png
diff --git a/browser/branding/nightly/msix/Assets/LargeTile.scale-200.png b/browser/branding/nightly/msix/Assets/LargeTile.scale-200.png
new file mode 100644
index 0000000000..2129097892
--- /dev/null
+++ b/browser/branding/nightly/msix/Assets/LargeTile.scale-200.png
diff --git a/browser/branding/nightly/msix/Assets/SmallTile.scale-200.png b/browser/branding/nightly/msix/Assets/SmallTile.scale-200.png
new file mode 100644
index 0000000000..ce01b51eed
--- /dev/null
+++ b/browser/branding/nightly/msix/Assets/SmallTile.scale-200.png
diff --git a/browser/branding/nightly/msix/Assets/Square150x150Logo.scale-200.png b/browser/branding/nightly/msix/Assets/Square150x150Logo.scale-200.png
new file mode 100644
index 0000000000..594ef2afa4
--- /dev/null
+++ b/browser/branding/nightly/msix/Assets/Square150x150Logo.scale-200.png
diff --git a/browser/branding/nightly/msix/Assets/Square44x44Logo.altform-lightunplated_targetsize-256.png b/browser/branding/nightly/msix/Assets/Square44x44Logo.altform-lightunplated_targetsize-256.png
new file mode 100644
index 0000000000..a5df4eb268
--- /dev/null
+++ b/browser/branding/nightly/msix/Assets/Square44x44Logo.altform-lightunplated_targetsize-256.png
diff --git a/browser/branding/nightly/msix/Assets/Square44x44Logo.altform-unplated_targetsize-256.png b/browser/branding/nightly/msix/Assets/Square44x44Logo.altform-unplated_targetsize-256.png
new file mode 100644
index 0000000000..a5df4eb268
--- /dev/null
+++ b/browser/branding/nightly/msix/Assets/Square44x44Logo.altform-unplated_targetsize-256.png
diff --git a/browser/branding/nightly/msix/Assets/Square44x44Logo.scale-200.png b/browser/branding/nightly/msix/Assets/Square44x44Logo.scale-200.png
new file mode 100644
index 0000000000..aa08176e34
--- /dev/null
+++ b/browser/branding/nightly/msix/Assets/Square44x44Logo.scale-200.png
diff --git a/browser/branding/nightly/msix/Assets/Square44x44Logo.targetsize-256.png b/browser/branding/nightly/msix/Assets/Square44x44Logo.targetsize-256.png
new file mode 100644
index 0000000000..b0aa02aebb
--- /dev/null
+++ b/browser/branding/nightly/msix/Assets/Square44x44Logo.targetsize-256.png
diff --git a/browser/branding/nightly/msix/Assets/StoreLogo.scale-200.png b/browser/branding/nightly/msix/Assets/StoreLogo.scale-200.png
new file mode 100644
index 0000000000..9a8d831e86
--- /dev/null
+++ b/browser/branding/nightly/msix/Assets/StoreLogo.scale-200.png
diff --git a/browser/branding/nightly/msix/Assets/Wide310x150Logo.scale-200.png b/browser/branding/nightly/msix/Assets/Wide310x150Logo.scale-200.png
new file mode 100644
index 0000000000..a6d1e61076
--- /dev/null
+++ b/browser/branding/nightly/msix/Assets/Wide310x150Logo.scale-200.png
diff --git a/browser/branding/nightly/newtab.ico b/browser/branding/nightly/newtab.ico
new file mode 100644
index 0000000000..a9b37c08c6
--- /dev/null
+++ b/browser/branding/nightly/newtab.ico
diff --git a/browser/branding/nightly/newwindow.ico b/browser/branding/nightly/newwindow.ico
new file mode 100644
index 0000000000..5537207710
--- /dev/null
+++ b/browser/branding/nightly/newwindow.ico
diff --git a/browser/branding/nightly/pbmode.ico b/browser/branding/nightly/pbmode.ico
new file mode 100644
index 0000000000..2087c2d8e6
--- /dev/null
+++ b/browser/branding/nightly/pbmode.ico
diff --git a/browser/branding/nightly/pref/firefox-branding.js b/browser/branding/nightly/pref/firefox-branding.js
new file mode 100644
index 0000000000..3d16ac5937
--- /dev/null
+++ b/browser/branding/nightly/pref/firefox-branding.js
@@ -0,0 +1,35 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This file contains branding-specific prefs.
+
+pref("startup.homepage_override_url", "https://www.mozilla.org/projects/firefox/%VERSION%/whatsnew/?oldversion=%OLD_VERSION%");
+pref("startup.homepage_welcome_url", "https://www.mozilla.org/projects/firefox/%VERSION%/firstrun/");
+pref("startup.homepage_welcome_url.additional", "");
+// The time interval between checks for a new version (in seconds)
+pref("app.update.interval", 7200); // 2 hours
+// Give the user x seconds to react before showing the big UI. default=12 hours
+pref("app.update.promptWaitTime", 43200);
+// URL user can browse to manually if for some reason all update installation
+// attempts fail.
+pref("app.update.url.manual", "https://www.mozilla.org/%LOCALE%/firefox/nightly/?reason=manual-update");
+// A default value for the "More information about this update" link
+// supplied in the "An update is available" page of the update wizard.
+pref("app.update.url.details", "https://www.mozilla.org/%LOCALE%/firefox/nightly/notes/");
+
+pref("app.releaseNotesURL", "https://www.mozilla.org/%LOCALE%/firefox/%VERSION%/releasenotes/?utm_source=firefox-browser&utm_medium=firefox-browser&utm_campaign=whatsnew");
+pref("app.releaseNotesURL.aboutDialog", "https://www.mozilla.org/%LOCALE%/firefox/%VERSION%/releasenotes/?utm_source=firefox-browser&utm_medium=firefox-desktop&utm_campaign=about-dialog");
+
+// The number of days a binary is permitted to be old
+// without checking for an update.  This assumes that
+// app.update.checkInstallTime is true.
+pref("app.update.checkInstallTime.days", 2);
+
+// Give the user x seconds to reboot before showing a badge on the hamburger
+// button. default=immediately
+pref("app.update.badgeWaitTime", 0);
+
+// Number of usages of the web console.
+// If this is less than 5, then pasting code into the web console is disabled
+pref("devtools.selfxss.count", 5);
diff --git a/browser/branding/nightly/private_browsing.VisualElementsManifest.xml b/browser/branding/nightly/private_browsing.VisualElementsManifest.xml
new file mode 100644
index 0000000000..fdff8c55ff
--- /dev/null
+++ b/browser/branding/nightly/private_browsing.VisualElementsManifest.xml
@@ -0,0 +1,12 @@
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this file,
+   - You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
+<Application xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
+  <VisualElements
+      ShowNameOnSquare150x150Logo='on'
+      Square150x150Logo='browser\VisualElements\PrivateBrowsing_150.png'
+      Square70x70Logo='browser\VisualElements\PrivateBrowsing_70.png'
+      ForegroundText='light'
+      BackgroundColor='#14171a'/>
+</Application>
diff --git a/browser/branding/nightly/stubinstaller/bgstub.jpg b/browser/branding/nightly/stubinstaller/bgstub.jpg
new file mode 100644
index 0000000000..891036a4fe
--- /dev/null
+++ b/browser/branding/nightly/stubinstaller/bgstub.jpg
diff --git a/browser/branding/nightly/stubinstaller/installing_page.css b/browser/branding/nightly/stubinstaller/installing_page.css
new file mode 100644
index 0000000000..8044838c79
--- /dev/null
+++ b/browser/branding/nightly/stubinstaller/installing_page.css
@@ -0,0 +1,61 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+body {
+  color: white;
+}
+
+#label,
+#progress_background,
+#blurb {
+  text-align: center;
+  margin: 20px 30px;
+}
+
+#label {
+  font-size: 40px;
+  margin-top: 100px;
+  margin-bottom: 20px;
+}
+
+#progress_background {
+  margin: 0 auto;
+  width: 60%;
+  height: 24px;
+  background-color: white;
+}
+
+body.high-contrast #progress_background {
+  outline: solid;
+}
+
+#progress_bar {
+  margin: 0;
+  width: 0%;
+  height: 100%;
+  background-color: #00AAFF;
+}
+
+/* In high contrast mode, fill the entire progress bar with its border. */
+body.high-contrast #progress_bar {
+  /* This border should be the height of progress_background. */
+  border-top: 24px solid;
+  box-sizing: border-box;
+}
+
+/* This layout doesn't want the header or content text. */
+#header, #content {
+  display: none;
+}
+
+#blurb {
+  font-size: 20px;
+}
+
+/* The footer goes in the bottom right corner. */
+#footer {
+  position: fixed;
+  right: 50px;
+  bottom: 59px;
+}
diff --git a/browser/branding/nightly/stubinstaller/profile_cleanup_page.css b/browser/branding/nightly/stubinstaller/profile_cleanup_page.css
new file mode 100644
index 0000000000..2d9c3ad189
--- /dev/null
+++ b/browser/branding/nightly/stubinstaller/profile_cleanup_page.css
@@ -0,0 +1,42 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+body {
+  color: white;
+}
+
+#header,
+#refreshCheckboxContainer,
+#refreshButtonContainer {
+  text-align: center;
+  margin-left: 40px;
+  margin-right: 40px;
+  margin-bottom: 30px;
+}
+
+#header {
+  font-size: 35px;
+  font-weight: normal;
+  margin-top: 45px;
+}
+
+#refreshCheckbox {
+  vertical-align: middle;
+}
+
+#checkboxLabel {
+  font-size: 13px;
+}
+
+#refreshButton {
+  padding: 8px 40px;
+  font-size: 15px;
+}
+
+/* The footer goes in the bottom right corner. */
+#footer {
+  position: fixed;
+  right: 50px;
+  bottom: 59px;
+}
diff --git a/browser/branding/nightly/wizHeader.bmp b/browser/branding/nightly/wizHeader.bmp
new file mode 100644
index 0000000000..89eaf90125
--- /dev/null
+++ b/browser/branding/nightly/wizHeader.bmp
diff --git a/browser/branding/nightly/wizHeaderRTL.bmp b/browser/branding/nightly/wizHeaderRTL.bmp
new file mode 100644
index 0000000000..451d87c70e
--- /dev/null
+++ b/browser/branding/nightly/wizHeaderRTL.bmp
diff --git a/browser/branding/nightly/wizWatermark.bmp b/browser/branding/nightly/wizWatermark.bmp
new file mode 100644
index 0000000000..f9d6a870e9
--- /dev/null
+++ b/browser/branding/nightly/wizWatermark.bmp