Implement frame attribution (FrameBlamer)

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 15debe08d42f079668b8ce8611a0b4961d34cff4..52a91806b7119d1473e871a5452be34556bac45c 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -29,6 +29,7 @@
 #include "base/strings/utf_string_conversions.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/time/time.h"
+#include "base/trace_event/trace_event_argument.h"
 #include "build/build_config.h"
 #include "cc/base/switches.h"
 #include "components/scheduler/renderer/renderer_scheduler.h"
@@ -1065,12 +1066,23 @@ RenderFrameImpl::~RenderFrameImpl() {
 
 void RenderFrameImpl::BindToWebFrame(blink::WebLocalFrame* web_frame) {
   DCHECK(!frame_);
+  DCHECK(!blame_context_);
 
   std::pair<FrameMap::iterator, bool> result = g_frame_map.Get().insert(
       std::make_pair(web_frame, this));
   CHECK(result.second) << "Inserting a duplicate item.";
 
   frame_ = web_frame;
+
+  if (frame_->parent()) {
+    RenderFrameImpl* parent_frame =
+        RenderFrameImpl::FromWebFrame(frame_->parent());
+    blame_context_ = make_scoped_ptr(new RenderFrameBlameContext(
+        routing_id_, *parent_frame->blame_context_));
+  } else {
+    blame_context_ = make_scoped_ptr(new RenderFrameBlameContext(
+        routing_id_, *RenderThreadImpl::current()->blame_context()));
+  }
 }
 
 void RenderFrameImpl::Initialize() {
@@ -2544,6 +2556,11 @@ blink::WebCookieJar* RenderFrameImpl::cookieJar() {
   return &cookie_jar_;
 }
 
+blink::BlameContext* RenderFrameImpl::frameBlameContext() {
+  DCHECK(blame_context_);
+  return blame_context_.get();
+}
+
 blink::WebServiceWorkerProvider*
 RenderFrameImpl::createServiceWorkerProvider() {
   // At this point we should have non-null data source.
@@ -3259,6 +3276,9 @@ void RenderFrameImpl::didCommitProvisionalLoad(
 void RenderFrameImpl::didCreateNewDocument(blink::WebLocalFrame* frame) {
   DCHECK(!frame_ || frame_ == frame);
 
+  blame_context_->set_url(frame_->getSecurityOrigin().toString().utf8());
+  blame_context_->TakeSnapshot();
+
   FOR_EACH_OBSERVER(RenderFrameObserver, observers_, DidCreateNewDocument());
   FOR_EACH_OBSERVER(RenderViewObserver, render_view_->observers(),
                     DidCreateNewDocument(frame));