Fix an IME regression for <webview> due to missing IPC message param

content/browser/browser_plugin/browser_plugin_guest.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.
 
 // A BrowserPluginGuest is the browser side of a browser <--> embedder
 // renderer channel. A BrowserPlugin (a WebPlugin) is on the embedder
 // renderer side of browser <--> embedder renderer communication.
 //
 // BrowserPluginGuest lives on the UI thread of the browser process. Any
 // messages about the guest render process that the embedder might be interested
@@ skipping 325 matching lines @@
   void OnTextInputStateChanged(const TextInputState& params);
   void OnImeSetComposition(
       int instance_id,
       const BrowserPluginHostMsg_SetComposition_Params& params);
   void OnImeCommitText(
       int instance_id,
       const base::string16& text,
       const std::vector<blink::WebCompositionUnderline>& underlines,
       const gfx::Range& replacement_range,
       int relative_cursor_pos);
-  void OnImeFinishComposingText(bool keep_selection);
+  void OnImeFinishComposingText(int instance_id, bool keep_selection);
   void OnExtendSelectionAndDelete(int instance_id, int before, int after);
   void OnImeCancelComposition();
 #if defined(OS_MACOSX) || defined(USE_AURA)
   void OnImeCompositionRangeChanged(
       const gfx::Range& range,
       const std::vector<gfx::Rect>& character_bounds);
 #endif
 
   // Message handlers for messages from guest.
   void OnHandleInputEventAck(
@@ skipping 99 matching lines @@
   // Weak pointer used to ask GeolocationPermissionContext about geolocation
   // permission.
   base::WeakPtrFactory<BrowserPluginGuest> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginGuest);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_GUEST_H_