Change grow box computation back to a method on BrowserWindow

chrome/browser/ui/browser_window.h

Index: chrome/browser/ui/browser_window.h
diff --git a/chrome/browser/ui/browser_window.h b/chrome/browser/ui/browser_window.h
index 0580f7f13fa4251e1eb80f8f1a044c75bb8d23f1..3ab9e4a9d3c450d7a5c5382a64237d353111d254 100644
--- a/chrome/browser/ui/browser_window.h
+++ b/chrome/browser/ui/browser_window.h
@@ -207,6 +207,12 @@ class BrowserWindow {
   // Returns whether the tool bar is visible or not.
   virtual bool IsToolbarVisible() const = 0;
 
+  // Returns the rect where the resize corner should be drawn by the render
+  // widget host view (on top of what the renderer returns). We return an empty
+  // rect to identify that there shouldn't be a resize corner (in the cases
+  // where we take care of it ourselves at the browser level).
+  virtual gfx::Rect GetRootWindowResizerRect() const = 0;
+
   // Returns whether the window is a panel. This is not always synonomous
   // with the associated browser having type panel since some environments
   // may draw popups in panel windows.