[TimeZoneMonitor] Decouple renderer side impl from content to blink.

third_party/WebKit/public/platform/Platform.h

Index: third_party/WebKit/public/platform/Platform.h
diff --git a/third_party/WebKit/public/platform/Platform.h b/third_party/WebKit/public/platform/Platform.h
index cbe6aca1fd0b458fccbd68fd250cb3d013c100cc..ce6fc9962c6343fd16cbd0ce84b2172d138222ef 100644
--- a/third_party/WebKit/public/platform/Platform.h
+++ b/third_party/WebKit/public/platform/Platform.h
@@ -141,6 +141,9 @@ class BLINK_PLATFORM_EXPORT Platform {
   static void initialize(Platform*);
   static void shutdown();
   static Platform* current();
+  // Used to get whether message loop is ready for current thread, to help
+  // blink::initialize() determining whether can initialize mojo stuff or not.
+  static bool isMessageLoopReady();

[haraken, 2016/10/18 19:39:11]

I want to avoid introducing this if possible...

[leonhsl(Using Gerrit), 2016/10/19 08:47:23]

I was assuming that we should put wrapper of base::XXX into WebKit platform, to
enable other parts {modules,web} etc. to use. Maybe this is not the most
appropriate place,, WDYT? Thanks.

 
   // Used to switch the current platform only for testing.
   static void setCurrentPlatformForTesting(Platform*);