[ash-md] Properly scales windows with transient parents in overview

ash/common/wm/overview/scoped_transform_overview_window.h

 // Copyright 2013 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 ASH_COMMON_WM_OVERVIEW_SCOPED_TRANSFORM_OVERVIEW_WINDOW_H_
 #define ASH_COMMON_WM_OVERVIEW_SCOPED_TRANSFORM_OVERVIEW_WINDOW_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 71 matching lines @@
   //  overview_window.SetOpacity(1);
   void BeginScopedAnimation(OverviewAnimationType animation_type,
                             ScopedAnimationSettings* animation_settings);
 
   // Returns true if this window selector window contains the |target|.
   bool Contains(const WmWindow* target) const;
 
   // Returns the original target bounds of all transformed windows.
   gfx::Rect GetTargetBoundsInScreen() const;
 
+  // Calculates the |window_| bounds after being transformed to the selector's
+  // space. The returned Rect is in virtual screen coordinates.

[tdanderson, 2016/07/29 20:20:02]

nit: include comment about the purpose of |hide_header|. Also mention that the
returned Rect can be the union of window bounds along the transient ancestor
path

[varkha, 2016/07/29 20:45:12]

Done.

+  gfx::Rect GetTransformedBounds(bool hide_header) const;
+
+  // Returns TOP_VIEW_INSET property of |window_| unless there are transient
+  // ancestors in which case returns 0.
+  int GetTopInset() const;
+
   // Restores and animates the managed window to it's non overview mode state.
   void RestoreWindow();
 
   // Forces the managed window to be shown (ie not hidden or minimized) when
   // calling RestoreWindow().
   void ShowWindowOnExit();
 
   // Informs the ScopedTransformOverviewWindow that the window being watched was
   // destroyed. This resets the internal window pointer.
   void OnWindowDestroyed();
@@ skipping 74 matching lines @@
   float original_opacity_;
 
   base::WeakPtrFactory<ScopedTransformOverviewWindow> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ScopedTransformOverviewWindow);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_WM_OVERVIEW_SCOPED_TRANSFORM_OVERVIEW_WINDOW_H_