Stretching NativeViewHost, and misc tab capture fixes.

ui/views/controls/native/native_view_host.h

 // 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.
 
 #ifndef UI_VIEWS_CONTROLS_NATIVE_NATIVE_VIEW_HOST_H_
 #define UI_VIEWS_CONTROLS_NATIVE_NATIVE_VIEW_HOST_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 32 matching lines @@
   void Attach(gfx::NativeView native_view);
 
   // Detach the attached native view. Its bounds and visibility will no
   // longer be manipulated by this View. The native view may be destroyed and
   // detached before calling this function, and this has no effect in that case.
   void Detach();
 
   // Sets a preferred size for the native view attached to this View.
   void SetPreferredSize(const gfx::Size& size);
 
+  // Sets a rendering size for the NativeView that may or may not match the size
+  // of this View. If the size does not match, scaling will occur. Pass an empty
+  // size to revert to the default behavior, where the NatieView's rendering
+  // size equals this View's size.
+  void SetRenderingSize(const gfx::Size& size);
+
   // Fast resizing will move the native view and clip its visible region, this
   // will result in white areas and will not resize the content (so scrollbars
   // will be all wrong and content will flow offscreen). Only use this
   // when you're doing extremely quick, high-framerate vertical resizes
   // and don't care about accuracy. Make sure you do a real resize at the
   // end. USE WITH CAUTION.
   void set_fast_resize(bool fast_resize) { fast_resize_ = fast_resize; }
   bool fast_resize() const { return fast_resize_; }
 
   // Sets the color to paint the background during a resize that involves a
@@ skipping 43 matching lines @@
   // The attached native view. There is exactly one native_view_ attached.
   gfx::NativeView native_view_;
 
   // A platform-specific wrapper that does the OS-level manipulation of the
   // attached gfx::NativeView.
   std::unique_ptr<NativeViewHostWrapper> native_wrapper_;
 
   // The preferred size of this View
   gfx::Size preferred_size_;
 
+  // The rendering size of the NativeView, or an empty size if no scaling of the
+  // NativeView should occur.
+  gfx::Size rendering_size_;
+
   // True if the native view is being resized using the fast method described
   // in the setter/accessor above.
   bool fast_resize_;
 
   // Value of |fast_resize_| during the last call to Layout.
   bool fast_resize_at_last_layout_;
 
   // Color to paint in the background while resizing.
   SkColor resize_background_color_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeViewHost);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_NATIVE_NATIVE_VIEW_HOST_H_