Fix painting glitch with text and NPAPI plugins. This was a regression from r167042. The problem wa…

content/common/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 file, hence no include guard.
 
 #include "build/build_config.h"
 #include "content/common/content_export.h"
 #include "content/common/content_param_traits.h"
 #include "content/public/common/common_param_traits.h"
@@ skipping 134 matching lines @@
 // The WebPluginDelegateProxy sends this to the WebPluginDelegateStub in its
 // destructor, so that the stub deletes the actual WebPluginDelegateImpl
 // object that it's hosting.
 IPC_SYNC_MESSAGE_CONTROL1_0(PluginMsg_DestroyInstance,
                             int /* instance_id */)
 
 IPC_SYNC_MESSAGE_CONTROL0_1(PluginMsg_GenerateRouteID,
                            int /* id */)
 
 // The messages below all map to WebPluginDelegate methods.
-IPC_SYNC_MESSAGE_ROUTED1_1(PluginMsg_Init,
+IPC_SYNC_MESSAGE_ROUTED1_2(PluginMsg_Init,
                            PluginMsg_Init_Params,
+                           bool /* transparent */,
                            bool /* result */)
 
 // Used to synchronously request a paint for windowless plugins.
 IPC_SYNC_MESSAGE_ROUTED1_0(PluginMsg_Paint,
                            gfx::Rect /* damaged_rect */)
 
 // Sent by the renderer after it paints from its backing store so that the
 // plugin knows it can send more invalidates.
 IPC_MESSAGE_ROUTED0(PluginMsg_DidPaint)
 
@@ skipping 340 matching lines @@
 IPC_SYNC_MESSAGE_ROUTED1_2(NPObjectMsg_Construct,
                            std::vector<content::NPVariant_Param> /* args */,
                            content::NPVariant_Param /* result_param */,
                            bool /* result */)
 
 IPC_SYNC_MESSAGE_ROUTED2_2(NPObjectMsg_Evaluate,
                            std::string /* script */,
                            bool /* popups_allowed */,
                            content::NPVariant_Param /* result_param */,
                            bool /* result */)