Introduce WebInputMethodController to blink

content/renderer/render_widget.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.
 
 #ifndef CONTENT_RENDERER_RENDER_WIDGET_H_
 #define CONTENT_RENDERER_RENDER_WIDGET_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 53 matching lines @@
 
 namespace blink {
 namespace scheduler {
 class RenderWidgetSchedulingState;
 }
 struct WebDeviceEmulationParams;
 class WebDragData;
 class WebFrameWidget;
 class WebGestureEvent;
 class WebImage;
+class WebInputMethodController;
 class WebLocalFrame;
 class WebMouseEvent;
 class WebNode;
 struct WebPoint;
 }
 
 namespace cc {
 class CompositorFrameSink;
 class FrameSinkId;
 class SwapPromise;
@@ skipping 71 matching lines @@
   // Closes a RenderWidget that was created by |CreateForFrame|.
   // TODO(avi): De-virtualize this once RenderViewImpl has-a RenderWidget.
   // https://crbug.com/545684
   virtual void CloseForFrame();
 
   int32_t routing_id() const { return routing_id_; }
   void SetRoutingID(int32_t routing_id);
 
   CompositorDependencies* compositor_deps() const { return compositor_deps_; }
   virtual blink::WebWidget* GetWebWidget() const;
+
+  // Returns the current instance of WebInputMethodController which is to be
+  // used for IME related tasks. This instance corresponds to the one from
+  // focused frame and can be nullptr.
+  blink::WebInputMethodController* GetInputMethodController() const;
+
   const gfx::Size& size() const { return size_; }
   bool is_fullscreen_granted() const { return is_fullscreen_granted_; }
   blink::WebDisplayMode display_mode() const { return display_mode_; }
   bool is_hidden() const { return is_hidden_; }
   // Temporary for debugging purposes...
   bool closing() const { return closing_; }
   bool has_host_context_menu_location() {
     return has_host_context_menu_location_;
   }
   gfx::Point host_context_menu_location() {
@@ skipping 651 matching lines @@
   // being handled. If the current event results in starting a drag/drop
   // session, this info is sent to the browser along with other drag/drop info.
   DragEventSourceInfo possible_drag_event_info_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidget);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_WIDGET_H_