Add an IPC method for Blink to call RapporService::RecordSample()

content/renderer/renderer_blink_platform_impl.h

Index: content/renderer/renderer_blink_platform_impl.h
diff --git a/content/renderer/renderer_blink_platform_impl.h b/content/renderer/renderer_blink_platform_impl.h
index 7691aca0e405c7ae1bd2f195ba0c6ee19b4e0b9a..f91e8cf47f91d88a1ca8fef3090bd65271245f86 100644
--- a/content/renderer/renderer_blink_platform_impl.h
+++ b/content/renderer/renderer_blink_platform_impl.h
@@ -159,6 +159,8 @@ class CONTENT_EXPORT RendererBlinkPlatformImpl : public BlinkPlatformImpl {
   virtual void cancelVibration();
   virtual blink::WebScheduler* scheduler();
   virtual blink::WebThread* currentThread();
+  virtual void recordRappor(const char* metric, const blink::WebString& sample);

[Alexei Svitkine (slow), 2015/04/08 14:57:11]

Maybe add the same comment about Rappor here that I suggest above.

[kojii, 2015/04/08 17:31:46]

Hm, these two are virtual override of platform.h in Blink, and jam@ suggested no
blank lines for all override methods. Maybe comments should be there?
timvolodine@ has a CL for Platform to support other features, so I can suggest
there.
https://code.google.com/p/chromium/codesearch#chromium/src/third_party/WebKit...

[Alexei Svitkine (slow), 2015/04/08 17:53:50]

Fair enough.

+  virtual void recordRapporURL(const char* metric, const blink::WebURL& url);
 
   // Set the PlatformEventObserverBase in |platform_event_observers_| associated
   // with |type| to |observer|. If there was already an observer associated to