Consolidate Widget Event code, other cleanup.

views/widget/native_widget.h

Index: views/widget/native_widget.h
diff --git a/views/widget/native_widget.h b/views/widget/native_widget.h
index b3624536512cb9476d29d3d68bfde1fc02105260..089cfb3d3cd894fbcc125a72bca4805f380a73b1 100644
--- a/views/widget/native_widget.h
+++ b/views/widget/native_widget.h
@@ -70,11 +70,11 @@ class NativeWidget {
   virtual bool IsScreenReaderActive() const = 0;
 
   // Sets or releases event capturing for this native widget.
-  virtual void SetNativeCapture() = 0;
-  virtual void ReleaseNativeCapture() = 0;
+  virtual void SetMouseCapture() = 0;
+  virtual void ReleaseMouseCapture() = 0;
 
   // Returns true if this native widget is capturing all events.
-  virtual bool HasNativeCapture() const = 0;
+  virtual bool HasMouseCapture() const = 0;
 
  protected:
   friend class Widget;