Add IPC to notify BrowserPlugin when RenderProcess is ready.

content/common/browser_plugin/browser_plugin_messages.h

 // 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.
 
 // Multiply-included message header, no traditional include guard.
 
 #include <string>
 
 #include "base/process/process.h"
 #include "cc/surfaces/surface.h"
@@ skipping 144 matching lines @@
                     cc::SurfaceSequence /* sequence */)
 
 // -----------------------------------------------------------------------------
 // These messages are from the browser process to the embedder.
 
 // When the guest crashes, the browser process informs the embedder through this
 // message.
 IPC_MESSAGE_CONTROL1(BrowserPluginMsg_GuestGone,
                      int /* browser_plugin_instance_id */)
 
+IPC_MESSAGE_CONTROL1(BrowserPluginMsg_GuestReady,
+                     int /* browser_plugin_instance_id */)
+
 // When the user tabs to the end of the tab stops of a guest, the browser
 // process informs the embedder to tab out of the browser plugin.
 IPC_MESSAGE_CONTROL2(BrowserPluginMsg_AdvanceFocus,
                      int /* browser_plugin_instance_id */,
                      bool /* reverse */)
 
 // When the guest starts/stops listening to touch events, it needs to notify the
 // plugin in the embedder about it.
 IPC_MESSAGE_CONTROL2(BrowserPluginMsg_ShouldAcceptTouchEvents,
                      int /* browser_plugin_instance_id */,
@@ skipping 13 matching lines @@
 
 // Forwards a PointerLock Unlock request to the BrowserPlugin.
 IPC_MESSAGE_CONTROL2(BrowserPluginMsg_SetMouseLock,
                      int /* browser_plugin_instance_id */,
                      bool /* enable */)
 
 // Sends text to be displayed in tooltip.
 IPC_MESSAGE_CONTROL2(BrowserPluginMsg_SetTooltipText,
                      int /* browser_plugin_instance_id */,
                      base::string16 /* tooltip_text */)