Navigation transitions: Pass is_transition_navigation flag up to the embedder

content/browser/web_contents/web_contents_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/browser/web_contents/web_contents_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 2414 matching lines @@
 
   if (!render_frame_host->GetParent()) {
     FOR_EACH_OBSERVER(
         WebContentsObserver,
         observers_,
         ProvisionalChangeToMainFrameUrl(validated_url,
                                         render_frame_host));
   }
 }
 
+void WebContentsImpl::DidStartNavigationTransition(
+    RenderFrameHostImpl* render_frame_host) {
+#if defined(OS_ANDROID)
+  int render_frame_id = render_frame_host->GetRoutingID();
+  ContentViewCoreImpl::FromWebContents(this)->
+      DidStartNavigationTransitionForFrame(render_frame_id);
+#endif
+}
+
 void WebContentsImpl::DidFailProvisionalLoadWithError(
     RenderFrameHostImpl* render_frame_host,
     const FrameHostMsg_DidFailProvisionalLoadWithError_Params& params) {
   GURL validated_url(params.url);
   FOR_EACH_OBSERVER(WebContentsObserver,
                     observers_,
                     DidFailProvisionalLoad(render_frame_host,
                                            validated_url,
                                            params.error_code,
                                            params.error_description));
@@ skipping 1791 matching lines @@
   if (new_size != old_size)
     delegate_->UpdatePreferredSize(this, new_size);
 }
 
 void WebContentsImpl::ResumeResponseDeferredAtStart() {
   FrameTreeNode* node = frame_tree_.root();
   node->render_manager()->ResumeResponseDeferredAtStart();
 }
 
 }  // namespace content