Add a way to fetch window frame metrics from NativeShellWindow

chrome/browser/ui/cocoa/extensions/shell_window_cocoa.h

Index: chrome/browser/ui/cocoa/extensions/shell_window_cocoa.h
diff --git a/chrome/browser/ui/cocoa/extensions/shell_window_cocoa.h b/chrome/browser/ui/cocoa/extensions/shell_window_cocoa.h
index 6f61540aba583414e3f3d7f790e5a1de757ebbf8..3866f12b8be5edaf47d582c718cc976500893c30 100644
--- a/chrome/browser/ui/cocoa/extensions/shell_window_cocoa.h
+++ b/chrome/browser/ui/cocoa/extensions/shell_window_cocoa.h
@@ -71,6 +71,10 @@ class ShellWindowCocoa : public NativeShellWindow {
   virtual void SetBounds(const gfx::Rect& bounds) OVERRIDE;
   virtual void FlashFrame(bool flash) OVERRIDE;
   virtual bool IsAlwaysOnTop() const OVERRIDE;
+  virtual gfx::Rect ContentBoundsForWindowBounds(
+      const gfx::Rect& window_bounds) const OVERRIDE;
+  virtual gfx::Rect WindowBoundsForContentBounds(
+      const gfx::Rect& content_bounds) const OVERRIDE;
 
   // Called when the window is about to be closed.
   void WindowWillClose();