Implement frame attribution (FrameBlamer)

content/renderer/render_thread_impl.h

Index: content/renderer/render_thread_impl.h
diff --git a/content/renderer/render_thread_impl.h b/content/renderer/render_thread_impl.h
index fc6734c82eddfd6054aa0d9b6aee50bb0393674e..4859a3eb62cc10c4a47d1ca8b9950cfc253e5566 100644
--- a/content/renderer/render_thread_impl.h
+++ b/content/renderer/render_thread_impl.h
@@ -29,6 +29,7 @@
 #include "content/common/storage_partition_service.mojom.h"
 #include "content/public/renderer/render_thread.h"
 #include "content/renderer/gpu/compositor_dependencies.h"
+#include "content/renderer/render_thread_blame_context.h"
 #include "net/base/network_change_notifier.h"
 #include "third_party/WebKit/public/platform/WebConnectionType.h"
 #include "ui/gfx/native_widget_types.h"
@@ -456,6 +457,8 @@ class CONTENT_EXPORT RenderThreadImpl
 
   StoragePartitionService* GetStoragePartitionService();
 
+  RenderThreadBlameContext* blame_context() { return &blame_context_; }
+
  protected:
   RenderThreadImpl(const InProcessChildThreadParams& params,
                    scoped_ptr<scheduler::RendererScheduler> scheduler);
@@ -707,6 +710,8 @@ class CONTENT_EXPORT RenderThreadImpl
 
   StoragePartitionServicePtr storage_partition_service_;
 
+  RenderThreadBlameContext blame_context_;
+
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };