Implement features in NativeViewHostAura for scroll end effect

ui/views/controls/native/native_view_host_aura.h

Index: ui/views/controls/native/native_view_host_aura.h
diff --git a/ui/views/controls/native/native_view_host_aura.h b/ui/views/controls/native/native_view_host_aura.h
index eba4b99c9fdf2c0b5cb45c7c571e7b5dc0aca9cc..45d80cc896fe6c8db0aa5c25e0c43b6440453926 100644
--- a/ui/views/controls/native/native_view_host_aura.h
+++ b/ui/views/controls/native/native_view_host_aura.h
@@ -7,7 +7,9 @@
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
 #include "ui/aura/window_observer.h"
+#include "ui/compositor/layer.h"
 #include "ui/views/controls/native/native_view_host_wrapper.h"
 #include "ui/views/views_export.h"
 
@@ -39,12 +41,23 @@ class VIEWS_EXPORT NativeViewHostAura : public NativeViewHostWrapper,
   // Overridden from aura::WindowObserver:
   virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE;
 
+  gfx::Point CalculateNewNativeViewOrigin(gfx::Rect input_rect,

[sky, 2013/09/24 20:23:25]

const gfx::Rect& on these (same for CalculateCLipOrigin).

Also, add description for all members (eg GetWidthFactory, orig_bounds_...)

[rharrison, 2013/09/26 20:36:48]

Done.

+                                          gfx::Rect native_rect) const;
+  gfx::Point CalculateClipOrigin(gfx::Rect input_rect,
+                                 gfx::Rect native_rect) const;
+  float GetWidthFactor() const;
+  float GetHeightFactor() const;
+
   // Our associated NativeViewHost.
   NativeViewHost* host_;
 
   // Have we installed a clip region?
   bool installed_clip_;
 
+  scoped_ptr<ui::Layer> clipping_layer_;

[sky, 2013/09/24 20:23:25]

If the life of clipping_layer is the same as NVHA, then no point in using
scoped_ptr. Well, actually you could use it to avoid the header include, but
style guide says no to that.

[rharrison, 2013/09/26 20:36:48]

Done.

+
+  gfx::Rect orig_bounds_;
+
   DISALLOW_COPY_AND_ASSIGN(NativeViewHostAura);
 };