Navigation transitions: Pass is_transition_navigation flag up to the embedder

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 5e8942bc8e6cef11b7a49b614865f634d28f8c19..a3e99fd1ed28e9260fad44647fdbd84780dd8d8b 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -2432,6 +2432,15 @@ void WebContentsImpl::DidStartProvisionalLoad(
   }
 }
 
+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) {