[WebView] Remove onFailure from VisualStateCallback.

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index 272aeb201995ae28ed0858dccb99fcb673914a50..05470bb438dc48a907267854d7def993ebbde470 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -360,6 +360,8 @@ bool RenderFrameHostImpl::OnMessageReceived(const IPC::Message &msg) {
     IPC_MESSAGE_HANDLER(FrameHostMsg_ContextMenu, OnContextMenu)
     IPC_MESSAGE_HANDLER(FrameHostMsg_JavaScriptExecuteResponse,
                         OnJavaScriptExecuteResponse)
+    IPC_MESSAGE_HANDLER(FrameHostMsg_VisualStateSwapInfo,
+                        OnVisualStateSwapInfo)
     IPC_MESSAGE_HANDLER(FrameHostMsg_VisualStateResponse,
                         OnVisualStateResponse)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(FrameHostMsg_RunJavaScriptMessage,
@@ -1134,10 +1136,15 @@ void RenderFrameHostImpl::OnJavaScriptExecuteResponse(
   }
 }
 
+void RenderFrameHostImpl::OnVisualStateSwapInfo(int source_frame_number,
+                                                bool swap_success) {
+  last_swap_info_ = std::make_pair(source_frame_number, swap_success);
+}
+
 void RenderFrameHostImpl::OnVisualStateResponse(uint64 id) {
   auto it = visual_state_callbacks_.find(id);
   if (it != visual_state_callbacks_.end()) {
-    it->second.Run(true);
+    it->second.Run(last_swap_info_.second);
     visual_state_callbacks_.erase(it);
   } else {
     NOTREACHED() << "Received script response for unknown request";