Get rid of the 1-pixel client inset hack.

ui/views/widget/desktop_aura/desktop_root_window_host_win.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/views/widget/desktop_aura/desktop_root_window_host_win.h"
 
 #include "base/win/metro.h"
 #include "third_party/skia/include/core/SkPath.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "ui/aura/client/aura_constants.h"
@@ skipping 729 matching lines @@
   native_widget_delegate_->OnNativeWidgetVisibilityChanged(visible);
 }
 
 void DesktopRootWindowHostWin::HandleClientSizeChanged(
     const gfx::Size& new_size) {
   if (root_window_host_delegate_)
     root_window_host_delegate_->OnHostResized(new_size);
 }
 
 void DesktopRootWindowHostWin::HandleFrameChanged() {
+  SetWindowTransparency();
   // Replace the frame and layout the contents.
   GetWidget()->non_client_view()->UpdateFrame(true);
 }
 
 void DesktopRootWindowHostWin::HandleNativeFocus(HWND last_focused_window) {
   // TODO(beng): inform the native_widget_delegate_.
   InputMethod* input_method = GetInputMethod();
   if (input_method)
     input_method->OnFocus();
 }
@@ skipping 119 matching lines @@
 }
 
 HWND DesktopRootWindowHostWin::GetHWND() const {
   return message_handler_->hwnd();
 }
 
 void DesktopRootWindowHostWin::SetWindowTransparency() {
   bool transparent = ShouldUseNativeFrame() && !IsFullscreen();
   root_window_->compositor()->SetHostHasTransparentBackground(transparent);
   root_window_->SetTransparent(transparent);
+  content_window_->SetTransparent(transparent);
 }
 
 bool DesktopRootWindowHostWin::IsModalWindowActive() const {
   // This function can get called during window creation which occurs before
   // root_window_ has been created.
   if (!root_window_)
     return false;
 
   aura::Window::Windows::const_iterator index;
   for (index = root_window_->children().begin();
@@ skipping 11 matching lines @@
 
 // static
 DesktopRootWindowHost* DesktopRootWindowHost::Create(
     internal::NativeWidgetDelegate* native_widget_delegate,
     DesktopNativeWidgetAura* desktop_native_widget_aura) {
   return new DesktopRootWindowHostWin(native_widget_delegate,
                                       desktop_native_widget_aura);
 }
 
 }  // namespace views