1 files changed, 47 insertions, 0 deletions
diff --git a/parser/nsCharsetSource.h b/parser/nsCharsetSource.h
new file mode 100644
index 0000000000..0590883688
--- /dev/null
+++ b/parser/nsCharsetSource.h
@@ -0,0 +1,47 @@
+/* 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/. */
+
+#ifndef nsCharsetSource_h_
+#define nsCharsetSource_h_
+
+// note: the value order defines the priority; higher numbers take priority
+enum nsCharsetSource {
+  kCharsetUninitialized,
+  kCharsetFromFallback,
+  kCharsetFromDocTypeDefault,  // This and up confident for XHR
+  // Start subdividing source for telemetry purposes
+  kCharsetFromInitialAutoDetectionASCII,
+  kCharsetFromInitialAutoDetectionWouldHaveBeenUTF8,
+  kCharsetFromInitialAutoDetectionWouldNotHaveBeenUTF8Generic,
+  kCharsetFromInitialAutoDetectionWouldNotHaveBeenUTF8Content,
+  kCharsetFromInitialAutoDetectionWouldNotHaveBeenUTF8DependedOnTLD,
+  // End subdividing source for telemetry purposes
+  kCharsetFromParentFrame,  // Same-origin parent takes precedence over detector
+                            // to avoid breaking tests. (Also, the HTML spec
+                            // says so.)
+  kCharsetFromXmlDeclaration,
+  kCharsetFromMetaTag,
+  kCharsetFromChannel,
+  kCharsetFromOtherComponent,
+  kCharsetFromInitialUserForcedAutoDetection,
+  // Start subdividing source for telemetry purposes
+  // Deliberately no Final version of ASCII
+  kCharsetFromFinalAutoDetectionWouldHaveBeenUTF8InitialWasASCII,
+  kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8Generic,
+  kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8GenericInitialWasASCII,
+  kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8Content,
+  kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8ContentInitialWasASCII,
+  kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8DependedOnTLD,
+  kCharsetFromFinalAutoDetectionWouldNotHaveBeenUTF8DependedOnTLDInitialWasASCII,
+  kCharsetFromFinalAutoDetectionFile,
+  // End subdividing source for telemetry purposes
+  kCharsetFromFinalUserForcedAutoDetection,
+  kCharsetFromXmlDeclarationUtf16,  // This one is overridden by
+                                    // kCharsetFromChannel
+  kCharsetFromByteOrderMark,
+  kCharsetFromUtf8OnlyMime,  // For JSON, WebVTT and such
+  kCharsetFromBuiltIn,       // resource: URLs
+};
+
+#endif /* nsCharsetSource_h_ */