Pass gfx structs by const ref (gfx::Vector2d/F)

ui/views/widget/desktop_aura/desktop_window_tree_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_window_tree_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 39 matching lines @@
 gfx::Size GetExpandedWindowSize(DWORD window_style, gfx::Size size) {
   if (!(window_style & WS_EX_COMPOSITED) || !ui::win::IsAeroGlassEnabled())
     return size;
 
   // Some AMD drivers can't display windows that are less than 64x64 pixels,
   // so expand them to be at least that size. http://crbug.com/286609
   gfx::Size expanded(std::max(size.width(), 64), std::max(size.height(), 64));
   return expanded;
 }
 
-void InsetBottomRight(gfx::Rect* rect, gfx::Vector2d vector) {
+void InsetBottomRight(gfx::Rect* rect, const gfx::Vector2d& vector) {
   rect->Inset(0, 0, vector.x(), vector.y());
 }
 
 }  // namespace
 
 DEFINE_WINDOW_PROPERTY_KEY(aura::Window*, kContentWindowForRootWindow, NULL);
 
 // Identifies the DesktopWindowTreeHostWin associated with the
 // WindowEventDispatcher.
 DEFINE_WINDOW_PROPERTY_KEY(DesktopWindowTreeHostWin*, kDesktopWindowTreeHostKey,
@@ skipping 927 matching lines @@
 
 // static
 DesktopWindowTreeHost* DesktopWindowTreeHost::Create(
     internal::NativeWidgetDelegate* native_widget_delegate,
     DesktopNativeWidgetAura* desktop_native_widget_aura) {
   return new DesktopWindowTreeHostWin(native_widget_delegate,
                                       desktop_native_widget_aura);
 }
 
 }  // namespace views