Defer app window appearance until first paint.

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 511 matching lines @@
     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateFaviconURL, OnUpdateFaviconURL)
 #if defined(OS_ANDROID)
     IPC_MESSAGE_HANDLER(ViewHostMsg_FindMatchRects_Reply,
                         OnFindMatchRectsReply)
     IPC_MESSAGE_HANDLER(ViewHostMsg_OpenDateTimeDialog,
                         OnOpenDateTimeDialog)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(JavaBridgeHostMsg_GetChannelHandle,
                                     OnJavaBridgeGetChannelHandle)
 #endif
     IPC_MESSAGE_HANDLER(ViewHostMsg_MediaNotification, OnMediaNotification)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_DidFirstVisuallyNonEmptyPaint,
+                        OnFirstVisuallyNonEmptyPaint)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP_EX()
   message_source_ = NULL;
 
   if (!message_is_ok) {
     RecordAction(UserMetricsAction("BadMessageTerminate_RVD"));
     GetRenderProcessHost()->ReceivedBadMessage();
   }
 
   return handled;
@@ skipping 1909 matching lines @@
 
     if (blocker)
       power_save_blockers_[message_source_][player_cookie] = blocker.release();
   } else {
     delete power_save_blockers_[message_source_][player_cookie];
     power_save_blockers_[message_source_].erase(player_cookie);
   }
 #endif  // !defined(OS_CHROMEOS)
 }
 
+void WebContentsImpl::OnFirstVisuallyNonEmptyPaint(int32 page_id) {
+  FOR_EACH_OBSERVER(WebContentsObserver, observers_,
+                    DidFirstVisuallyNonEmptyPaint(page_id));
+}
 
 void WebContentsImpl::DidChangeVisibleSSLState() {
   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
                     DidChangeVisibleSSLState());
 }
 
 void WebContentsImpl::NotifyBeforeFormRepostWarningShow() {
   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
                     BeforeFormRepostWarningShow());
 }
@@ skipping 1179 matching lines @@
 }
 
 void WebContentsImpl::OnFrameRemoved(
     RenderViewHostImpl* render_view_host,
     int64 frame_id) {
    FOR_EACH_OBSERVER(WebContentsObserver, observers_,
                      FrameDetached(render_view_host, frame_id));
 }
 
 }  // namespace content