Implement frame attribution (FrameBlamer)

content/renderer/renderer_blink_platform_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/renderer_blink_platform_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 234 matching lines @@
     : BlinkPlatformImpl(renderer_scheduler->DefaultTaskRunner()),
       main_thread_(renderer_scheduler->CreateMainThread()),
       clipboard_delegate_(new RendererClipboardDelegate),
       clipboard_(new WebClipboardImpl(clipboard_delegate_.get())),
       mime_registry_(new RendererBlinkPlatformImpl::MimeRegistry),
       sudden_termination_disables_(0),
       plugin_refresh_allowed_(true),
       default_task_runner_(renderer_scheduler->DefaultTaskRunner()),
       loading_task_runner_(renderer_scheduler->LoadingTaskRunner()),
       web_scrollbar_behavior_(new WebScrollbarBehaviorImpl),
-      renderer_scheduler_(renderer_scheduler) {
+      renderer_scheduler_(renderer_scheduler),
+      web_blame_context_(new WebBlameContextImpl(
+          RenderThreadImpl::current()->blame_context())) {
 #if !defined(OS_ANDROID) && !defined(OS_WIN)
   if (g_sandbox_enabled && sandboxEnabled()) {
     sandbox_support_.reset(new RendererBlinkPlatformImpl::SandboxSupport);
   } else {
     DVLOG(1) << "Disabling sandbox support for testing.";
   }
 #endif
 
   // ChildThread may not exist in some tests.
   if (ChildThreadImpl::current()) {
@@ skipping 30 matching lines @@
       child_thread ? child_thread->resource_dispatcher() : NULL,
       make_scoped_ptr(currentThread()->taskRunner()->clone()));
 }
 
 blink::WebThread* RendererBlinkPlatformImpl::currentThread() {
   if (main_thread_->isCurrentThread())
     return main_thread_.get();
   return BlinkPlatformImpl::currentThread();
 }
 
+blink::WebBlameContext* RendererBlinkPlatformImpl::threadBlameContext() {
+  if (!main_thread_->isCurrentThread())
+    return nullptr;
+  return web_blame_context_.get();
+}
+
 blink::WebClipboard* RendererBlinkPlatformImpl::clipboard() {
   blink::WebClipboard* clipboard =
       GetContentClient()->renderer()->OverrideWebClipboard();
   if (clipboard)
     return clipboard;
   return clipboard_.get();
 }
 
 blink::WebMimeRegistry* RendererBlinkPlatformImpl::mimeRegistry() {
   return mime_registry_.get();
@@ skipping 961 matching lines @@
 }
 
 //------------------------------------------------------------------------------
 
 blink::WebTrialTokenValidator*
 RendererBlinkPlatformImpl::trialTokenValidator() {
   return &trial_token_validator_;
 }
 
 }  // namespace content