Adding upstream version 115.8.0esr.upstream/115.8.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 657 insertions, 0 deletions

diff --git a/dom/media/gmp/GMPChild.cpp b/dom/media/gmp/GMPChild.cpp
new file mode 100644
index 0000000000..0d485345bc
--- /dev/null
+++ b/dom/media/gmp/GMPChild.cpp
@@ -0,0 +1,657 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/. */
+
+#include "GMPChild.h"
+
+#include "base/command_line.h"
+#include "base/task.h"
+#include "ChildProfilerController.h"
+#include "ChromiumCDMAdapter.h"
+#ifdef XP_LINUX
+#  include "dlfcn.h"
+#endif
+#include "gmp-video-decode.h"
+#include "gmp-video-encode.h"
+#include "GMPContentChild.h"
+#include "GMPLoader.h"
+#include "GMPLog.h"
+#include "GMPPlatform.h"
+#include "GMPProcessChild.h"
+#include "GMPProcessParent.h"
+#include "GMPUtils.h"
+#include "GMPVideoDecoderChild.h"
+#include "GMPVideoEncoderChild.h"
+#include "GMPVideoHost.h"
+#include "mozilla/Algorithm.h"
+#include "mozilla/FOGIPC.h"
+#include "mozilla/glean/GleanMetrics.h"
+#include "mozilla/ipc/CrashReporterClient.h"
+#include "mozilla/ipc/Endpoint.h"
+#include "mozilla/ipc/ProcessChild.h"
+#include "mozilla/TextUtils.h"
+#include "nsDebugImpl.h"
+#include "nsExceptionHandler.h"
+#include "nsIFile.h"
+#include "nsReadableUtils.h"
+#include "nsThreadManager.h"
+#include "nsXULAppAPI.h"
+#include "nsIXULRuntime.h"
+#include "prio.h"
+#ifdef XP_WIN
+#  include <stdlib.h>  // for _exit()
+#  include "WinUtils.h"
+#else
+#  include <unistd.h>  // for _exit()
+#endif
+
+using namespace mozilla::ipc;
+
+namespace mozilla {
+
+#define GMP_CHILD_LOG_DEBUG(x, ...)                                   \
+  GMP_LOG_DEBUG("GMPChild[pid=%d] " x, (int)base::GetCurrentProcId(), \
+                ##__VA_ARGS__)
+
+namespace gmp {
+
+GMPChild::GMPChild()
+    : mGMPMessageLoop(MessageLoop::current()), mGMPLoader(nullptr) {
+  GMP_CHILD_LOG_DEBUG("GMPChild ctor");
+  nsDebugImpl::SetMultiprocessMode("GMP");
+}
+
+GMPChild::~GMPChild() {
+  GMP_CHILD_LOG_DEBUG("GMPChild dtor");
+#ifdef XP_LINUX
+  for (auto& libHandle : mLibHandles) {
+    dlclose(libHandle);
+  }
+#endif
+}
+
+bool GMPChild::Init(const nsAString& aPluginPath,
+                    mozilla::ipc::UntypedEndpoint&& aEndpoint) {
+  GMP_CHILD_LOG_DEBUG("%s pluginPath=%s", __FUNCTION__,
+                      NS_ConvertUTF16toUTF8(aPluginPath).get());
+
+  // GMPChild needs nsThreadManager to create the ProfilerChild thread.
+  // It is also used on debug builds for the sandbox tests.
+  if (NS_WARN_IF(NS_FAILED(nsThreadManager::get().Init()))) {
+    return false;
+  }
+
+  if (NS_WARN_IF(!aEndpoint.Bind(this))) {
+    return false;
+  }
+
+  CrashReporterClient::InitSingleton(this);
+
+  mPluginPath = aPluginPath;
+
+  return true;
+}
+
+mozilla::ipc::IPCResult GMPChild::RecvProvideStorageId(
+    const nsCString& aStorageId) {
+  GMP_CHILD_LOG_DEBUG("%s", __FUNCTION__);
+  mStorageId = aStorageId;
+  return IPC_OK();
+}
+
+GMPErr GMPChild::GetAPI(const char* aAPIName, void* aHostAPI, void** aPluginAPI,
+                        const nsACString& aKeySystem) {
+  if (!mGMPLoader) {
+    return GMPGenericErr;
+  }
+  return mGMPLoader->GetAPI(aAPIName, aHostAPI, aPluginAPI, aKeySystem);
+}
+
+mozilla::ipc::IPCResult GMPChild::RecvPreloadLibs(const nsCString& aLibs) {
+  // Pre-load libraries that may need to be used by the EME plugin but that
+  // can't be loaded after the sandbox has started.
+#ifdef XP_WIN
+  // Items in this must be lowercase!
+  constexpr static const char16_t* whitelist[] = {
+      u"dxva2.dll",        // Get monitor information
+      u"evr.dll",          // MFGetStrideForBitmapInfoHeader
+      u"freebl3.dll",      // NSS for clearkey CDM
+      u"mfplat.dll",       // MFCreateSample, MFCreateAlignedMemoryBuffer,
+                           // MFCreateMediaType
+      u"msmpeg2vdec.dll",  // H.264 decoder
+      u"nss3.dll",         // NSS for clearkey CDM
+      u"ole32.dll",        // required for OPM
+      u"oleaut32.dll",     // For _bstr_t use in libwebrtc, see bug 1788592
+      u"psapi.dll",        // For GetMappedFileNameW, see bug 1383611
+      u"softokn3.dll",     // NSS for clearkey CDM
+      u"winmm.dll",        // Dependency for widevine
+  };
+  constexpr static bool (*IsASCII)(const char16_t*) =
+      IsAsciiNullTerminated<char16_t>;
+  static_assert(AllOf(std::begin(whitelist), std::end(whitelist), IsASCII),
+                "Items in the whitelist must not contain non-ASCII "
+                "characters!");
+
+  nsTArray<nsCString> libs;
+  SplitAt(", ", aLibs, libs);
+  for (nsCString lib : libs) {
+    ToLowerCase(lib);
+    for (const char16_t* whiteListedLib : whitelist) {
+      if (nsDependentString(whiteListedLib)
+              .EqualsASCII(lib.Data(), lib.Length())) {
+        LoadLibraryW(char16ptr_t(whiteListedLib));
+        break;
+      }
+    }
+  }
+#elif defined(XP_LINUX)
+  constexpr static const char* whitelist[] = {
+      // NSS libraries used by clearkey.
+      "libfreeblpriv3.so",
+      "libsoftokn3.so",
+      // glibc libraries merged into libc.so.6; see bug 1725828 and
+      // the corresponding code in GMPParent.cpp.
+      "libdl.so.2",
+      "libpthread.so.0",
+      "librt.so.1",
+  };
+
+  nsTArray<nsCString> libs;
+  SplitAt(", ", aLibs, libs);
+  for (const nsCString& lib : libs) {
+    for (const char* whiteListedLib : whitelist) {
+      if (lib.EqualsASCII(whiteListedLib)) {
+        auto libHandle = dlopen(whiteListedLib, RTLD_NOW | RTLD_GLOBAL);
+        if (libHandle) {
+          mLibHandles.AppendElement(libHandle);
+        } else {
+          // TODO(bug 1698718): remove the logging once we've identified
+          // the cause of the load failure.
+          const char* error = dlerror();
+          if (error) {
+            // We should always have an error, but gracefully handle just in
+            // case.
+            nsAutoCString nsError{error};
+            CrashReporter::AppendAppNotesToCrashReport(nsError);
+          }
+          // End bug 1698718 logging.
+
+          MOZ_CRASH("Couldn't load lib needed by media plugin");
+        }
+      }
+    }
+  }
+#endif
+  return IPC_OK();
+}
+
+bool GMPChild::GetUTF8LibPath(nsACString& aOutLibPath) {
+  nsCOMPtr<nsIFile> libFile;
+
+#define GMP_PATH_CRASH(explain)                          \
+  do {                                                   \
+    nsAutoString path;                                   \
+    if (!libFile || NS_FAILED(libFile->GetPath(path))) { \
+      path = mPluginPath;                                \
+    }                                                    \
+    CrashReporter::AnnotateCrashReport(                  \
+        CrashReporter::Annotation::GMPLibraryPath,       \
+        NS_ConvertUTF16toUTF8(path));                    \
+    MOZ_CRASH(explain);                                  \
+  } while (false)
+
+  nsresult rv = NS_NewLocalFile(mPluginPath, true, getter_AddRefs(libFile));
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    GMP_PATH_CRASH("Failed to create file for plugin path");
+    return false;
+  }
+
+  nsCOMPtr<nsIFile> parent;
+  rv = libFile->GetParent(getter_AddRefs(parent));
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    GMP_PATH_CRASH("Failed to get parent file for plugin file");
+    return false;
+  }
+
+  nsAutoString parentLeafName;
+  rv = parent->GetLeafName(parentLeafName);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    GMP_PATH_CRASH("Failed to get leaf for plugin file");
+    return false;
+  }
+
+  nsAutoString baseName;
+  baseName = Substring(parentLeafName, 4, parentLeafName.Length() - 1);
+
+#if defined(XP_MACOSX)
+  nsAutoString binaryName = u"lib"_ns + baseName + u".dylib"_ns;
+#elif defined(OS_POSIX)
+  nsAutoString binaryName = u"lib"_ns + baseName + u".so"_ns;
+#elif defined(XP_WIN)
+  nsAutoString binaryName = baseName + u".dll"_ns;
+#else
+#  error not defined
+#endif
+  rv = libFile->AppendRelativePath(binaryName);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    GMP_PATH_CRASH("Failed to append lib to plugin file");
+    return false;
+  }
+
+  if (NS_WARN_IF(!FileExists(libFile))) {
+    GMP_PATH_CRASH("Plugin file does not exist");
+    return false;
+  }
+
+  nsAutoString path;
+  rv = libFile->GetPath(path);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    GMP_PATH_CRASH("Failed to get path for plugin file");
+    return false;
+  }
+
+  CopyUTF16toUTF8(path, aOutLibPath);
+  return true;
+}
+
+static nsCOMPtr<nsIFile> AppendFile(nsCOMPtr<nsIFile>&& aFile,
+                                    const nsString& aStr) {
+  return (aFile && NS_SUCCEEDED(aFile->Append(aStr))) ? aFile : nullptr;
+}
+
+static nsCOMPtr<nsIFile> CloneFile(const nsCOMPtr<nsIFile>& aFile) {
+  nsCOMPtr<nsIFile> clone;
+  return (aFile && NS_SUCCEEDED(aFile->Clone(getter_AddRefs(clone)))) ? clone
+                                                                      : nullptr;
+}
+
+static nsCOMPtr<nsIFile> GetParentFile(const nsCOMPtr<nsIFile>& aFile) {
+  nsCOMPtr<nsIFile> parent;
+  return (aFile && NS_SUCCEEDED(aFile->GetParent(getter_AddRefs(parent))))
+             ? parent
+             : nullptr;
+}
+
+#if defined(XP_WIN)
+static bool IsFileLeafEqualToASCII(const nsCOMPtr<nsIFile>& aFile,
+                                   const char* aStr) {
+  nsAutoString leafName;
+  return aFile && NS_SUCCEEDED(aFile->GetLeafName(leafName)) &&
+         leafName.EqualsASCII(aStr);
+}
+#endif
+
+#if defined(XP_WIN)
+#  define FIREFOX_FILE u"firefox.exe"_ns
+#  define XUL_LIB_FILE u"xul.dll"_ns
+#elif defined(XP_MACOSX)
+#  define FIREFOX_FILE u"firefox"_ns
+#  define XUL_LIB_FILE u"XUL"_ns
+#else
+#  define FIREFOX_FILE u"firefox"_ns
+#  define XUL_LIB_FILE u"libxul.so"_ns
+#endif
+
+static nsCOMPtr<nsIFile> GetFirefoxAppPath(
+    nsCOMPtr<nsIFile> aPluginContainerPath) {
+  MOZ_ASSERT(aPluginContainerPath);
+#if defined(XP_MACOSX)
+  // On MacOS the firefox binary is a few parent directories up from
+  // plugin-container.
+  // aPluginContainerPath will end with something like:
+  // xxxx/NightlyDebug.app/Contents/MacOS/plugin-container.app/Contents/MacOS/plugin-container
+  nsCOMPtr<nsIFile> path = aPluginContainerPath;
+  for (int i = 0; i < 4; i++) {
+    path = GetParentFile(path);
+  }
+  return path;
+#else
+  nsCOMPtr<nsIFile> parent = GetParentFile(aPluginContainerPath);
+#  if XP_WIN
+  if (IsFileLeafEqualToASCII(parent, "i686")) {
+    // We must be on Windows on ARM64, where the plugin-container path will
+    // be in the 'i686' subdir. The firefox.exe is in the parent directory.
+    parent = GetParentFile(parent);
+  }
+#  endif
+  return parent;
+#endif
+}
+
+#if defined(XP_MACOSX)
+static bool GetSigPath(const int aRelativeLayers,
+                       const nsString& aTargetSigFileName,
+                       nsCOMPtr<nsIFile> aExecutablePath,
+                       nsCOMPtr<nsIFile>& aOutSigPath) {
+  // The sig file will be located in
+  // xxxx/NightlyDebug.app/Contents/Resources/XUL.sig
+  // xxxx/NightlyDebug.app/Contents/Resources/firefox.sig
+  // xxxx/NightlyDebug.app/Contents/MacOS/plugin-container.app/Contents/Resources/plugin-container.sig
+  // On MacOS the sig file is a few parent directories up from
+  // its executable file.
+  // Start to search the path from the path of the executable file we provided.
+  MOZ_ASSERT(aExecutablePath);
+  nsCOMPtr<nsIFile> path = aExecutablePath;
+  for (int i = 0; i < aRelativeLayers; i++) {
+    nsCOMPtr<nsIFile> parent;
+    if (NS_WARN_IF(NS_FAILED(path->GetParent(getter_AddRefs(parent))))) {
+      return false;
+    }
+    path = parent;
+  }
+  MOZ_ASSERT(path);
+  aOutSigPath = path;
+  return NS_SUCCEEDED(path->Append(u"Resources"_ns)) &&
+         NS_SUCCEEDED(path->Append(aTargetSigFileName));
+}
+#endif
+
+static bool AppendHostPath(nsCOMPtr<nsIFile>& aFile,
+                           nsTArray<std::pair<nsCString, nsCString>>& aPaths) {
+  nsString str;
+  if (!FileExists(aFile) || NS_FAILED(aFile->GetPath(str))) {
+    return false;
+  }
+
+  nsCString filePath = NS_ConvertUTF16toUTF8(str);
+  nsCString sigFilePath;
+#if defined(XP_MACOSX)
+  nsAutoString binary;
+  if (NS_FAILED(aFile->GetLeafName(binary))) {
+    return false;
+  }
+  binary.Append(u".sig"_ns);
+  nsCOMPtr<nsIFile> sigFile;
+  if (GetSigPath(2, binary, aFile, sigFile) &&
+      NS_SUCCEEDED(sigFile->GetPath(str))) {
+    CopyUTF16toUTF8(str, sigFilePath);
+  } else {
+    // Cannot successfully get the sig file path.
+    // Assume it is located at the same place as plugin-container
+    // alternatively.
+    sigFilePath = nsCString(NS_ConvertUTF16toUTF8(str) + ".sig"_ns);
+  }
+#else
+  sigFilePath = nsCString(NS_ConvertUTF16toUTF8(str) + ".sig"_ns);
+#endif
+  aPaths.AppendElement(
+      std::make_pair(std::move(filePath), std::move(sigFilePath)));
+  return true;
+}
+
+nsTArray<std::pair<nsCString, nsCString>>
+GMPChild::MakeCDMHostVerificationPaths(const nsACString& aPluginLibPath) {
+  // Record the file path and its sig file path.
+  nsTArray<std::pair<nsCString, nsCString>> paths;
+  // Plugin binary path.
+  paths.AppendElement(
+      std::make_pair(nsCString(aPluginLibPath), aPluginLibPath + ".sig"_ns));
+
+  // Plugin-container binary path.
+  // Note: clang won't let us initialize an nsString from a wstring, so we
+  // need to go through UTF8 to get to an nsString.
+  const std::string pluginContainer =
+      WideToUTF8(CommandLine::ForCurrentProcess()->program());
+  nsString str;
+
+  CopyUTF8toUTF16(nsDependentCString(pluginContainer.c_str()), str);
+  nsCOMPtr<nsIFile> path;
+  if (NS_FAILED(NS_NewLocalFile(str, true, /* aFollowLinks */
+                                getter_AddRefs(path))) ||
+      !AppendHostPath(path, paths)) {
+    // Without successfully determining plugin-container's path, we can't
+    // determine libxul's or Firefox's. So give up.
+    return paths;
+  }
+
+#if defined(XP_WIN)
+  // On Windows on ARM64, we should also append the x86 plugin-container's
+  // xul.dll.
+  const bool isWindowsOnARM64 =
+      IsFileLeafEqualToASCII(GetParentFile(path), "i686");
+  if (isWindowsOnARM64) {
+    nsCOMPtr<nsIFile> x86XulPath =
+        AppendFile(GetParentFile(path), XUL_LIB_FILE);
+    if (!AppendHostPath(x86XulPath, paths)) {
+      return paths;
+    }
+  }
+#endif
+
+  // Firefox application binary path.
+  nsCOMPtr<nsIFile> appDir = GetFirefoxAppPath(path);
+  path = AppendFile(CloneFile(appDir), FIREFOX_FILE);
+  if (!AppendHostPath(path, paths)) {
+    return paths;
+  }
+
+  // Libxul path. Note: re-using 'appDir' var here, as we assume libxul is in
+  // the same directory as Firefox executable.
+  appDir->GetPath(str);
+  path = AppendFile(CloneFile(appDir), XUL_LIB_FILE);
+  if (!AppendHostPath(path, paths)) {
+    return paths;
+  }
+
+  return paths;
+}
+
+static auto ToCString(const nsTArray<std::pair<nsCString, nsCString>>& aPairs) {
+  return StringJoin(","_ns, aPairs, [](nsACString& dest, const auto& p) {
+    dest.AppendPrintf("(%s,%s)", p.first.get(), p.second.get());
+  });
+}
+
+mozilla::ipc::IPCResult GMPChild::RecvStartPlugin(const nsString& aAdapter) {
+  GMP_CHILD_LOG_DEBUG("%s", __FUNCTION__);
+
+  nsAutoCString libPath;
+  if (!GetUTF8LibPath(libPath)) {
+    CrashReporter::AnnotateCrashReport(
+        CrashReporter::Annotation::GMPLibraryPath,
+        NS_ConvertUTF16toUTF8(mPluginPath));
+#ifdef XP_WIN
+    return IPC_FAIL(this,
+                    nsPrintfCString("Failed to get lib path with error(%lu).",
+                                    GetLastError())
+                        .get());
+#else
+    return IPC_FAIL(this, "Failed to get lib path.");
+#endif
+  }
+
+  auto platformAPI = new GMPPlatformAPI();
+  InitPlatformAPI(*platformAPI, this);
+
+  mGMPLoader = MakeUnique<GMPLoader>();
+#if defined(MOZ_SANDBOX) && !defined(XP_MACOSX)
+  if (!mGMPLoader->CanSandbox()) {
+    GMP_CHILD_LOG_DEBUG("%s Can't sandbox GMP, failing", __FUNCTION__);
+    delete platformAPI;
+    return IPC_FAIL(this, "Can't sandbox GMP.");
+  }
+#endif
+
+  GMPAdapter* adapter = nullptr;
+  if (aAdapter.EqualsLiteral("chromium")) {
+    auto&& paths = MakeCDMHostVerificationPaths(libPath);
+    GMP_CHILD_LOG_DEBUG("%s CDM host paths=%s", __func__,
+                        ToCString(paths).get());
+    adapter = new ChromiumCDMAdapter(std::move(paths));
+  }
+
+  if (!mGMPLoader->Load(libPath.get(), libPath.Length(), platformAPI,
+                        adapter)) {
+    NS_WARNING("Failed to load GMP");
+    delete platformAPI;
+    CrashReporter::AnnotateCrashReport(
+        CrashReporter::Annotation::GMPLibraryPath,
+        NS_ConvertUTF16toUTF8(mPluginPath));
+
+#ifdef XP_WIN
+    return IPC_FAIL(this, nsPrintfCString("Failed to load GMP with error(%lu).",
+                                          GetLastError())
+                              .get());
+#else
+    return IPC_FAIL(this, "Failed to load GMP.");
+#endif
+  }
+
+  return IPC_OK();
+}
+
+MessageLoop* GMPChild::GMPMessageLoop() { return mGMPMessageLoop; }
+
+void GMPChild::ActorDestroy(ActorDestroyReason aWhy) {
+  GMP_CHILD_LOG_DEBUG("%s reason=%d", __FUNCTION__, aWhy);
+
+  for (uint32_t i = mGMPContentChildren.Length(); i > 0; i--) {
+    MOZ_ASSERT_IF(aWhy == NormalShutdown,
+                  !mGMPContentChildren[i - 1]->IsUsed());
+    mGMPContentChildren[i - 1]->Close();
+  }
+
+  if (mGMPLoader) {
+    mGMPLoader->Shutdown();
+  }
+  if (AbnormalShutdown == aWhy) {
+    NS_WARNING("Abnormal shutdown of GMP process!");
+    ProcessChild::QuickExit();
+  }
+
+  // Send the last bits of Glean data over to the main process.
+  glean::FlushFOGData(
+      [](ByteBuf&& aBuf) { glean::SendFOGData(std::move(aBuf)); });
+
+  if (mProfilerController) {
+    mProfilerController->Shutdown();
+    mProfilerController = nullptr;
+  }
+
+  CrashReporterClient::DestroySingleton();
+
+  XRE_ShutdownChildProcess();
+}
+
+void GMPChild::ProcessingError(Result aCode, const char* aReason) {
+  switch (aCode) {
+    case MsgDropped:
+      _exit(0);  // Don't trigger a crash report.
+    case MsgNotKnown:
+      MOZ_CRASH("aborting because of MsgNotKnown");
+    case MsgNotAllowed:
+      MOZ_CRASH("aborting because of MsgNotAllowed");
+    case MsgPayloadError:
+      MOZ_CRASH("aborting because of MsgPayloadError");
+    case MsgProcessingError:
+      MOZ_CRASH("aborting because of MsgProcessingError");
+    case MsgRouteError:
+      MOZ_CRASH("aborting because of MsgRouteError");
+    case MsgValueError:
+      MOZ_CRASH("aborting because of MsgValueError");
+    default:
+      MOZ_CRASH("not reached");
+  }
+}
+
+PGMPTimerChild* GMPChild::AllocPGMPTimerChild() {
+  return new GMPTimerChild(this);
+}
+
+bool GMPChild::DeallocPGMPTimerChild(PGMPTimerChild* aActor) {
+  MOZ_ASSERT(mTimerChild == static_cast<GMPTimerChild*>(aActor));
+  mTimerChild = nullptr;
+  return true;
+}
+
+GMPTimerChild* GMPChild::GetGMPTimers() {
+  if (!mTimerChild) {
+    PGMPTimerChild* sc = SendPGMPTimerConstructor();
+    if (!sc) {
+      return nullptr;
+    }
+    mTimerChild = static_cast<GMPTimerChild*>(sc);
+  }
+  return mTimerChild;
+}
+
+PGMPStorageChild* GMPChild::AllocPGMPStorageChild() {
+  return new GMPStorageChild(this);
+}
+
+bool GMPChild::DeallocPGMPStorageChild(PGMPStorageChild* aActor) {
+  mStorage = nullptr;
+  return true;
+}
+
+GMPStorageChild* GMPChild::GetGMPStorage() {
+  if (!mStorage) {
+    PGMPStorageChild* sc = SendPGMPStorageConstructor();
+    if (!sc) {
+      return nullptr;
+    }
+    mStorage = static_cast<GMPStorageChild*>(sc);
+  }
+  return mStorage;
+}
+
+mozilla::ipc::IPCResult GMPChild::RecvCrashPluginNow() {
+  MOZ_CRASH();
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult GMPChild::RecvCloseActive() {
+  for (uint32_t i = mGMPContentChildren.Length(); i > 0; i--) {
+    mGMPContentChildren[i - 1]->CloseActive();
+  }
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult GMPChild::RecvInitGMPContentChild(
+    Endpoint<PGMPContentChild>&& aEndpoint) {
+  GMPContentChild* child =
+      mGMPContentChildren.AppendElement(new GMPContentChild(this))->get();
+  aEndpoint.Bind(child);
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult GMPChild::RecvFlushFOGData(
+    FlushFOGDataResolver&& aResolver) {
+  GMP_CHILD_LOG_DEBUG("GMPChild RecvFlushFOGData");
+  glean::FlushFOGData(std::move(aResolver));
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult GMPChild::RecvTestTriggerMetrics(
+    TestTriggerMetricsResolver&& aResolve) {
+  GMP_CHILD_LOG_DEBUG("GMPChild RecvTestTriggerMetrics");
+  mozilla::glean::test_only_ipc::a_counter.Add(
+      nsIXULRuntime::PROCESS_TYPE_GMPLUGIN);
+  aResolve(true);
+  return IPC_OK();
+}
+
+void GMPChild::GMPContentChildActorDestroy(GMPContentChild* aGMPContentChild) {
+  for (uint32_t i = mGMPContentChildren.Length(); i > 0; i--) {
+    RefPtr<GMPContentChild>& destroyedActor = mGMPContentChildren[i - 1];
+    if (destroyedActor.get() == aGMPContentChild) {
+      SendPGMPContentChildDestroyed();
+      mGMPContentChildren.RemoveElementAt(i - 1);
+      break;
+    }
+  }
+}
+
+mozilla::ipc::IPCResult GMPChild::RecvInitProfiler(
+    Endpoint<PProfilerChild>&& aEndpoint) {
+  mProfilerController =
+      mozilla::ChildProfilerController::Create(std::move(aEndpoint));
+  return IPC_OK();
+}
+
+}  // namespace gmp
+}  // namespace mozilla
+
+#undef GMP_CHILD_LOG_DEBUG
+#undef __CLASS__