Simplify InputMethodWin initialization.

content/browser/renderer_host/render_widget_host_view_mac.mm

 // 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/renderer_host/render_widget_host_view_mac.h"
 
 #import <objc/runtime.h>
 #include <OpenGL/gl.h>
 #include <QuartzCore/QuartzCore.h>
 
@@ skipping 2536 matching lines @@
     return NO;
 
   return canBeKeyView_;
 }
 
 - (BOOL)becomeFirstResponder {
   if (!renderWidgetHostView_->render_widget_host_)
     return NO;
 
   renderWidgetHostView_->render_widget_host_->Focus();
-  renderWidgetHostView_->render_widget_host_->SetInputMethodActive(true);
   renderWidgetHostView_->SetTextInputActive(true);
 
   // Cancel any onging composition text which was left before we lost focus.
   // TODO(suzhe): We should do it in -resignFirstResponder: method, but
   // somehow that method won't be called when switching among different tabs.
   // See http://crbug.com/47209
   [self cancelComposition];
 
   NSNumber* direction = [NSNumber numberWithUnsignedInteger:
       [[self window] keyViewSelectionDirection]];
   NSDictionary* userInfo =
       [NSDictionary dictionaryWithObject:direction
                                   forKey:kSelectionDirection];
   [[NSNotificationCenter defaultCenter]
       postNotificationName:kViewDidBecomeFirstResponder
                     object:self
                   userInfo:userInfo];
 
   return YES;
 }
 
 - (BOOL)resignFirstResponder {
   renderWidgetHostView_->SetTextInputActive(false);
   if (!renderWidgetHostView_->render_widget_host_)
     return YES;
 
   if (closeOnDeactivate_)
     renderWidgetHostView_->KillSelf();
 
-  renderWidgetHostView_->render_widget_host_->SetInputMethodActive(false);
   renderWidgetHostView_->render_widget_host_->Blur();
 
   // We should cancel any onging composition whenever RWH's Blur() method gets
   // called, because in this case, webkit will confirm the ongoing composition
   // internally.
   [self cancelComposition];
 
   return YES;
 }
 
@@ skipping 706 matching lines @@
 
 // "-webkit-app-region: drag | no-drag" is implemented on Mac by excluding
 // regions that are not draggable. (See ControlRegionView in
 // native_app_window_cocoa.mm). This requires the render host view to be
 // draggable by default.
 - (BOOL)mouseDownCanMoveWindow {
   return YES;
 }
 
 @end