app_list: Fix shadow bleeds over launcher button and steals mouse events

ui/aura/test/test_window_delegate.h

 // Copyright (c) 2012 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.
 
 #ifndef UI_AURA_TEST_TEST_WINDOW_DELEGATE_H_
 #define UI_AURA_TEST_TEST_WINDOW_DELEGATE_H_
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/aura/window_delegate.h"
+#include "ui/gfx/rect.h"
 
 namespace aura {
 namespace test {
 
 // WindowDelegate implementation with all methods stubbed out.
 class TestWindowDelegate : public WindowDelegate {
  public:
   TestWindowDelegate();
   virtual ~TestWindowDelegate();
 
@@ skipping 13 matching lines @@
   virtual bool OnMouseEvent(MouseEvent* event) OVERRIDE;
   virtual ui::TouchStatus OnTouchEvent(TouchEvent* event) OVERRIDE;
   virtual ui::GestureStatus OnGestureEvent(GestureEvent* event) OVERRIDE;
   virtual bool CanFocus() OVERRIDE;
   virtual void OnCaptureLost() OVERRIDE;
   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE;
   virtual void OnWindowDestroying() OVERRIDE;
   virtual void OnWindowDestroyed() OVERRIDE;
   virtual void OnWindowVisibilityChanged(bool visible) OVERRIDE;
+  virtual bool HasHitTestMask() const OVERRIDE;
+  virtual void GetHitTestMask(gfx::Path* mask) const OVERRIDE;
 
  private:
   int window_component_;
 
   DISALLOW_COPY_AND_ASSIGN(TestWindowDelegate);
 };
 
 // A simple WindowDelegate implementation for these tests. It owns itself
 // (deletes itself when the Window it is attached to is destroyed).
 class ColorTestWindowDelegate : public TestWindowDelegate {
  public:
   explicit ColorTestWindowDelegate(SkColor color);
   virtual ~ColorTestWindowDelegate();
 
   ui::KeyboardCode last_key_code() const { return last_key_code_; }
 
   // Overridden from TestWindowDelegate:
   virtual bool OnKeyEvent(KeyEvent* event) OVERRIDE;
   virtual void OnWindowDestroyed() OVERRIDE;
   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
 
  private:
   SkColor color_;
   ui::KeyboardCode last_key_code_;
 
   DISALLOW_COPY_AND_ASSIGN(ColorTestWindowDelegate);
 };
 
+// A simple WindowDelegate that has a hit-test mask.
+class MaskedWindowDelegate : public TestWindowDelegate {
+ public:
+  explicit MaskedWindowDelegate(const gfx::Rect mask_rect);
+
+  // Overridden from TestWindowDelegate:
+  virtual bool HasHitTestMask() const OVERRIDE;
+  virtual void GetHitTestMask(gfx::Path* mask) const OVERRIDE;
+
+ private:
+  gfx::Rect mask_rect_;
+
+  DISALLOW_COPY_AND_ASSIGN(MaskedWindowDelegate);
+};
+
 }  // namespace test
 }  // namespace aura
 
 #endif  // UI_AURA_TEST_TEST_WINDOW_DELEGATE_H_