Stretching NativeViewHost, and misc tab capture fixes.

ui/aura/window.cc

 // 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.
 
 #include "ui/aura/window.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <utility>
@@ skipping 237 matching lines @@
     if (screen_position_client) {
       gfx::Point origin = bounds.origin();
       screen_position_client->ConvertPointToScreen(root, &origin);
       bounds.set_origin(origin);
     }
   }
   return bounds;
 }
 
 void Window::SetTransform(const gfx::Transform& transform) {
+  if (transform == this->transform())
+    return;
+
   for (WindowObserver& observer : observers_)
     observer.OnWindowTransforming(this);
   layer()->SetTransform(transform);
   for (WindowObserver& observer : observers_)
     observer.OnWindowTransformed(this);
   NotifyAncestorWindowTransformed(this);
 }
 
 void Window::SetLayoutManager(LayoutManager* layout_manager) {
   if (layout_manager == layout_manager_.get())
@@ skipping 817 matching lines @@
     layer_name = "Unnamed Window";
 
   if (id_ != -1)
     layer_name += " " + base::IntToString(id_);
 
   layer()->set_name(layer_name);
 #endif
 }
 
 }  // namespace aura