Perform direct routing of mouse events when the pointer is locked.

content/browser/renderer_host/render_widget_host_delegate.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_DELEGATE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_DELEGATE_H_
 
 #include <stdint.h>
 
 #include <vector>
@@ skipping 166 matching lines @@
 
   // Notification that the widget has lost capture.
   virtual void LostCapture(RenderWidgetHostImpl* render_widget_host) {}
 
   // Notification that the widget has lost the mouse lock.
   virtual void LostMouseLock(RenderWidgetHostImpl* render_widget_host) {}
 
   // Returns true if |render_widget_host| holds the mouse lock.
   virtual bool HasMouseLock(RenderWidgetHostImpl* render_widget_host);
 
+  // Returns the widget that holds the mouse lock or nullptr if the mouse isn't
+  // locked.
+  virtual RenderWidgetHostImpl* MouseLockWidget();

[Charlie Reis, 2017/02/15 21:38:49]

nit: GetMouseLockWidget

[lfg, 2017/02/15 22:02:48]

Done.

+
   // Called when the visibility of the RenderFrameProxyHost in outer
   // WebContents changes. This method is only called on an inner WebContents and
   // will eventually notify all the RenderWidgetHostViews belonging to that
   // WebContents.
   virtual void OnRenderFrameProxyVisibilityChanged(bool visible) {}
 
   // Update the renderer's cache of the screen rect of the view and window.
   virtual void SendScreenRects() {}
 
   // Notifies that the main frame in the renderer has performed the first paint
@@ skipping 52 matching lines @@
   // not a WebContents, returns nullptr.
   virtual WebContents* GetAsWebContents();
 
  protected:
   virtual ~RenderWidgetHostDelegate() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_DELEGATE_H_