Add a way to fetch window frame metrics from NativeShellWindow

chrome/browser/ui/cocoa/browser_window_cocoa.h

Index: chrome/browser/ui/cocoa/browser_window_cocoa.h
diff --git a/chrome/browser/ui/cocoa/browser_window_cocoa.h b/chrome/browser/ui/cocoa/browser_window_cocoa.h
index fd9c923ebeae39ed25f7a56e46aad813ecc1cbd8..2372b166d24b2a906b1396eefdbbef7a1950c382 100644
--- a/chrome/browser/ui/cocoa/browser_window_cocoa.h
+++ b/chrome/browser/ui/cocoa/browser_window_cocoa.h
@@ -50,6 +50,10 @@ class BrowserWindowCocoa :
   virtual bool IsActive() const 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;
   virtual gfx::NativeWindow GetNativeWindow() OVERRIDE;
   virtual BrowserWindowTesting* GetBrowserWindowTesting() OVERRIDE;
   virtual StatusBubble* GetStatusBubble() OVERRIDE;