Aura: Fix window resizing for large drags.

ui/aura/demo/demo_main.cc

 // Copyright (c) 2011 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.
 
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/i18n/icu_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "third_party/skia/include/core/SkXfermode.h"
@@ skipping 13 matching lines @@
 #endif
 
 namespace {
 
 // Trivial WindowDelegate implementation that draws a colored background.
 class DemoWindowDelegate : public aura::WindowDelegate {
  public:
   explicit DemoWindowDelegate(SkColor color) : color_(color) {}
 
   // Overridden from WindowDelegate:
-  virtual void OnBoundsChanging(gfx::Rect* new_bounds) OVERRIDE {}
+  virtual gfx::Size GetMinimumSize() const OVERRIDE {
+    return gfx::Size();
+  }
   virtual void OnBoundsChanged(const gfx::Rect& old_bounds,
                                const gfx::Rect& new_bounds) OVERRIDE {}
   virtual void OnFocus() OVERRIDE {}
   virtual void OnBlur() OVERRIDE {}
   virtual bool OnKeyEvent(aura::KeyEvent* event) OVERRIDE {
     return false;
   }
   virtual gfx::NativeCursor GetCursor(const gfx::Point& point) OVERRIDE {
     return gfx::kNullCursor;
   }
@@ skipping 66 matching lines @@
   window3.SetBounds(gfx::Rect(10, 10, 50, 50));
   window3.Show();
   window3.SetParent(&window2);
 
   aura::Desktop::GetInstance()->Run();
 
   ui::CompositorTestSupport::Terminate();
 
   return 0;
 }