[#4] Pass gfx structs by const ref (gfx::PointF)

cc/layers/texture_layer.cc

 // Copyright 2010 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 "cc/layers/texture_layer.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/location.h"
 #include "base/synchronization/lock.h"
@@ skipping 51 matching lines @@
       PassAs<LayerImpl>();
 }
 
 void TextureLayer::SetFlipped(bool flipped) {
   if (flipped_ == flipped)
     return;
   flipped_ = flipped;
   SetNeedsCommit();
 }
 
-void TextureLayer::SetUV(gfx::PointF top_left, gfx::PointF bottom_right) {
+void TextureLayer::SetUV(const gfx::PointF& top_left,
+                         const gfx::PointF& bottom_right) {
   if (uv_top_left_ == top_left && uv_bottom_right_ == bottom_right)
     return;
   uv_top_left_ = top_left;
   uv_bottom_right_ = bottom_right;
   SetNeedsCommit();
 }
 
 void TextureLayer::SetVertexOpacity(float bottom_left,
                                     float top_left,
                                     float top_right,
@@ skipping 263 matching lines @@
 }
 
 void TextureLayer::MailboxHolder::ReturnAndReleaseOnImplThread(
     unsigned sync_point, bool is_lost) {
   Return(sync_point, is_lost);
   message_loop_->PostTask(FROM_HERE,
                           base::Bind(&MailboxHolder::InternalRelease, this));
 }
 
 }  // namespace cc