Refactor: Make MediaCaptureDevicesDispatcher have pluggable handlers.

extensions/common/extension.h

Index: extensions/common/extension.h
diff --git a/extensions/common/extension.h b/extensions/common/extension.h
index c8d169090d605a003a97e610926fbc5297dd9e6f..fdcbf48815dc5e17d074d87c96fefaa7d285e6ca 100644
--- a/extensions/common/extension.h
+++ b/extensions/common/extension.h
@@ -354,6 +354,7 @@ class Extension : public base::RefCountedThreadSafe<Extension> {
   bool is_extension() const;
   bool is_shared_module() const;
   bool is_theme() const;
+  bool is_media_request_white_listed() const;

[Sergey Ulanov, 2015/05/07 01:05:49]

I don't think the whitelist belongs in the extensions. Please keep it in
chrome/browser/media. You can move the whitelist to ExtensionMediaAccessHandler
if you address my other comments, particularly about CheckMediaAccessPermission

[changbin, 2015/05/22 05:10:59]

Thanks, i think it's done now:)

 
   bool can_be_incognito_enabled() const;