Pass more hints to encoding detector.

third_party/WebKit/Source/platform/text/TextEncodingDetector.h

Index: third_party/WebKit/Source/platform/text/TextEncodingDetector.h
diff --git a/third_party/WebKit/Source/platform/text/TextEncodingDetector.h b/third_party/WebKit/Source/platform/text/TextEncodingDetector.h
index 65dce2bb6aa9ad0831c74287cb18410a6b6eb41f..e0cbab570c6bbd5e553ff7a52bac95b6d5434314 100644
--- a/third_party/WebKit/Source/platform/text/TextEncodingDetector.h
+++ b/third_party/WebKit/Source/platform/text/TextEncodingDetector.h
@@ -35,6 +35,7 @@
 #include <cstddef>
 
 namespace WTF {
+class String;
 class TextEncoding;
 }
 
@@ -44,9 +45,13 @@ namespace blink {
 // hintEncodingName, detect the most likely character encoding.
 // The way hintEncodingName is used is up to an implementation.
 // Currently, the only caller sets it to the parent frame encoding.
+// |hintUrl| is optional. You can pass String().
+// |hintUserLanguage| is an optional language code like "fr".
 PLATFORM_EXPORT bool detectTextEncoding(const char* data,
                                         size_t length,
                                         const char* hintEncodingName,
+                                        const WTF::String& hintUrl,

[Jinsuk Kim, 2017/01/20 21:50:47]

Can this be of type const char* like other parameters unless there is a
particular reason?

[tkent, 2017/01/23 00:02:57]

Done.

+                                        const char* hintUserLanguage,
                                         WTF::TextEncoding* detectedEncoding);
 
 }  // namespace blink