Revert restartInput change off the M57 release branch.

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 248 matching lines @@
 
   void OnDidHandleKeyEvent() override;
   void OnDidOverscroll(const ui::DidOverscrollParams& params) override;
   void OnInputEventAck(std::unique_ptr<InputEventAck> input_event_ack) override;
   void NotifyInputEventHandled(blink::WebInputEvent::Type handled_type,
                                blink::WebInputEventResult result,
                                InputEventAckState ack_result) override;
   void SetInputHandler(RenderWidgetInputHandler* input_handler) override;
   void ShowVirtualKeyboard() override;
   void UpdateTextInputState() override;
-  void ClearTextInputState() override;
   bool WillHandleGestureEvent(const blink::WebGestureEvent& event) override;
   bool WillHandleMouseEvent(const blink::WebMouseEvent& event) override;
 
   // RenderWidgetScreenMetricsDelegate
   void Redraw() override;
   void Resize(const ResizeParams& resize_params) override;
   void SetScreenMetricsEmulationParameters(
       bool enabled,
       const blink::WebDeviceEmulationParams& params) override;
   void SetScreenRects(const gfx::Rect& view_screen_rect,
                       const gfx::Rect& window_screen_rect) override;
 
   // blink::WebWidgetClient
   blink::WebLayerTreeView* initializeLayerTreeView() override;
   void didMeaningfulLayout(blink::WebMeaningfulLayout layout_type) override;
   void didChangeCursor(const blink::WebCursorInfo&) override;
   void closeWidgetSoon() override;
   void show(blink::WebNavigationPolicy) override;
   blink::WebRect windowRect() override;
   blink::WebRect viewRect() override;
   void setToolTipText(const blink::WebString& text,
                       blink::WebTextDirection hint) override;
   void setWindowRect(const blink::WebRect&) override;
   blink::WebScreenInfo screenInfo() override;
+  void resetInputMethod() override;
   void didHandleGestureEvent(const blink::WebGestureEvent& event,
                              bool event_cancelled) override;
   void didOverscroll(const blink::WebFloatSize& overscrollDelta,
                      const blink::WebFloatSize& accumulatedOverscroll,
                      const blink::WebFloatPoint& position,
                      const blink::WebFloatSize& velocity) override;
   void showVirtualKeyboard() override;
   void convertViewportToWindow(blink::WebRect* rect) override;
   void convertWindowToViewport(blink::WebFloatRect* rect) override;
   bool requestPointerLock() override;
@@ skipping 532 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_