Fix bug 145175: [Win] Frameless app windows are not resizable if no draggable region is specified

chrome/browser/ui/extensions/native_shell_window.h

Index: chrome/browser/ui/extensions/native_shell_window.h
diff --git a/chrome/browser/ui/extensions/native_shell_window.h b/chrome/browser/ui/extensions/native_shell_window.h
index 002c7bb1a094d0e3b53dffa779d0ebdd7265ea37..793bf0da7aebd7c1b33889af78e796c222c18926 100644
--- a/chrome/browser/ui/extensions/native_shell_window.h
+++ b/chrome/browser/ui/extensions/native_shell_window.h
@@ -35,6 +35,10 @@ class NativeShellWindow : public BaseWindow {
   virtual void HandleKeyboardEvent(
       const content::NativeWebKeyboardEvent& event) = 0;
 
+  // TODO(jianli): once http://crbug.com/123007 is fixed, we'll no longer need
+  // this.
+  virtual void RenderViewHostChanged() = 0;
+
   virtual ~NativeShellWindow() {}
 };