Adds the ability for WebContentsDelegate to decide if event should be updated

content/browser/renderer_host/render_widget_host_impl.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_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 329 matching lines @@
   void StartNewContentRenderingTimeout(uint32_t next_source_id);
 
   // Notification that a new compositor frame has been generated following
   // a page load. This stops |new_content_rendering_timeout_|, or prevents
   // the timer from running if the load commit message hasn't been received
   // yet.
   void OnFirstPaintAfterLoad();
 
   // Forwards the keyboard event with optional commands to the renderer. If
   // |key_event| is not forwarded for any reason, then |commands| are ignored.
+  // |update_event| (if non-null) is set to indicate whether the underlying
+  // event in |key_event| should be updated. |update_event| is only used on
+  // aura.
   void ForwardKeyboardEventWithCommands(
       const NativeWebKeyboardEvent& key_event,
-      const std::vector<EditCommand>* commands);
+      const std::vector<EditCommand>* commands,
+      bool* update_event = nullptr);
 
   // Forwards the given message to the renderer. These are called by the view
   // when it has received a message.
   void ForwardGestureEventWithLatencyInfo(
       const blink::WebGestureEvent& gesture_event,
       const ui::LatencyInfo& ui_latency) override;
   virtual void ForwardTouchEventWithLatencyInfo(
       const blink::WebTouchEvent& touch_event,
       const ui::LatencyInfo& ui_latency);  // Virtual for testing.
   void ForwardMouseEventWithLatencyInfo(
@@ skipping 549 matching lines @@
   float last_device_scale_factor_;
 
   base::WeakPtrFactory<RenderWidgetHostImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_