Implement frame attribution (FrameBlamer)

third_party/WebKit/public/platform/WebViewScheduler.h

Index: third_party/WebKit/public/platform/WebViewScheduler.h
diff --git a/third_party/WebKit/public/platform/WebViewScheduler.h b/third_party/WebKit/public/platform/WebViewScheduler.h
index bee6dce80a8e2a3466e21bf534280b8727aafeed..a3693f6af743d1bc447ae936d5a107bce1411e80 100644
--- a/third_party/WebKit/public/platform/WebViewScheduler.h
+++ b/third_party/WebKit/public/platform/WebViewScheduler.h
@@ -6,6 +6,7 @@
 #define WebViewScheduler_h
 
 #include "WebCommon.h"
+#include "public/platform/BlameContext.h"
 #include "public/platform/WebPassOwnPtr.h"
 
 namespace blink {
@@ -19,8 +20,10 @@ public:
     // The scheduler may throttle tasks associated with background pages.
     virtual void setPageVisible(bool) = 0;
 
-    // Creaters a new WebFrameScheduler, the caller is responsible for deleting it.
-    virtual WebPassOwnPtr<WebFrameScheduler> createFrameScheduler() = 0;
+    // Creates a new WebFrameScheduler. The caller is responsible for deleting
+    // it. All tasks executed by the frame scheduler will be attributed to
+    // |BlameContext|.
+    virtual WebPassOwnPtr<WebFrameScheduler> createFrameScheduler(BlameContext*) = 0;
 
     // Instructs this WebViewScheduler to use virtual time. When virtual time is enabled
     // the system doesn't actually sleep for the delays between tasks before executing