Snap RWHVA and resize the legacy window on Windows whenever the ancestor window's bounds change.

content/browser/renderer_host/render_widget_host_view_aura.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_VIEW_AURA_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 482 matching lines @@
   // Helper function to set keyboard focus to the main window.
   void SetKeyboardFocus();
 
   RenderFrameHostImpl* GetFocusedFrame();
 
   // Returns true if the |event| passed in can be forwarded to the renderer.
   bool CanRendererHandleEvent(const ui::MouseEvent* event,
                               bool mouse_locked,
                               bool selection_popup);
 
+  // Called when the parent window bounds change.
+  void HandleParentBoundsChanged();
+
   // The model object.
   RenderWidgetHostImpl* host_;
 
   aura::Window* window_;
 
   scoped_ptr<DelegatedFrameHost> delegated_frame_host_;
 
   scoped_ptr<WindowObserver> window_observer_;
 
   // Are we in the process of closing?  Tracked so fullscreen views can avoid
@@ skipping 145 matching lines @@
   // compositing surface and showing the disambiguation popup.
   gfx::Vector2dF disambiguation_scroll_offset_;
 
   base::WeakPtrFactory<RenderWidgetHostViewAura> weak_ptr_factory_;
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAura);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_