Remove the 2-level input method system & InputMethodBridge.

ui/views/widget/native_widget_mac.h

 // Copyright 2014 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.
 
 #ifndef UI_VIEWS_WIDGET_NATIVE_WIDGET_MAC_H_
 #define UI_VIEWS_WIDGET_NATIVE_WIDGET_MAC_H_
 
 #include "ui/gfx/native_widget_types.h"
 #include "ui/views/widget/native_widget_private.h"
 
@@ skipping 39 matching lines @@
   const ui::Compositor* GetCompositor() const override;
   const ui::Layer* GetLayer() const override;
   void ReorderNativeViews() override;
   void ViewRemoved(View* view) override;
   void SetNativeWindowProperty(const char* name, void* value) override;
   void* GetNativeWindowProperty(const char* name) const override;
   TooltipManager* GetTooltipManager() const override;
   void SetCapture() override;
   void ReleaseCapture() override;
   bool HasCapture() const override;
-  InputMethod* CreateInputMethod() override;
-  internal::InputMethodDelegate* GetInputMethodDelegate() override;
-  ui::InputMethod* GetHostInputMethod() override;
+  ui::InputMethod* GetInputMethod() override;
   void CenterWindow(const gfx::Size& size) override;
   void GetWindowPlacement(gfx::Rect* bounds,
                           ui::WindowShowState* show_state) const override;
   bool SetWindowTitle(const base::string16& title) override;
   void SetWindowIcons(const gfx::ImageSkia& window_icon,
                       const gfx::ImageSkia& app_icon) override;
   void InitModalType(ui::ModalType modal_type) override;
   gfx::Rect GetWindowBoundsInScreen() const override;
   gfx::Rect GetClientAreaBoundsInScreen() const override;
   gfx::Rect GetRestoredBounds() const override;
@@ skipping 66 matching lines @@
   scoped_ptr<BridgedNativeWidget> bridge_;
 
   Widget::InitParams::Ownership ownership_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeWidgetMac);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_NATIVE_WIDGET_MAC_H_