Remove unused transparency display items.

cc/blink/web_display_item_list_impl.cc

 // Copyright 2014 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/blink/web_display_item_list_impl.h"
 
 #include <vector>
 
 #include "cc/blink/web_blend_mode.h"
 #include "cc/blink/web_filter_operations_impl.h"
@@ skipping 67 matching lines @@
 void WebDisplayItemListImpl::appendTransformItem(const SkMatrix44& matrix) {
   gfx::Transform transform;
   transform.matrix() = matrix;
   display_item_list_->AppendItem(cc::TransformDisplayItem::Create(transform));
 }
 
 void WebDisplayItemListImpl::appendEndTransformItem() {
   display_item_list_->AppendItem(cc::EndTransformDisplayItem::Create());
 }
 
-// TODO(pdr): Remove once there are no more callers.
-void WebDisplayItemListImpl::appendTransparencyItem(
-    float opacity,
-    blink::WebBlendMode blend_mode) {
-  display_item_list_->AppendItem(cc::TransparencyDisplayItem::Create(

[ajuma, 2015/02/25 14:16:01]

I believe this is the only caller of cc::TransparencyDisplayItem::Create, so
cc/resources/transparency_display_item.{h, cc} can be deleted altogether now.
Feel free to either do that here, or I can take care of it in a follow-up.

-      opacity, BlendModeToSkia(blend_mode)));
-}
-
-// TODO(pdr): Remove once there are no more callers.
-void WebDisplayItemListImpl::appendEndTransparencyItem() {
-  display_item_list_->AppendItem(cc::EndTransparencyDisplayItem::Create());
-}
-
 void WebDisplayItemListImpl::appendCompositingItem(
     float opacity,
     SkXfermode::Mode xfermode,
     SkColorFilter* color_filter) {
   display_item_list_->AppendItem(cc::CompositingDisplayItem::Create(
       opacity, xfermode, skia::SharePtr(color_filter)));
 }
 
 void WebDisplayItemListImpl::appendEndCompositingItem() {
   display_item_list_->AppendItem(cc::EndCompositingDisplayItem::Create());
@@ skipping 21 matching lines @@
 }
 
 void WebDisplayItemListImpl::appendEndScrollItem() {
   appendEndTransformItem();
 }
 
 WebDisplayItemListImpl::~WebDisplayItemListImpl() {
 }
 
 }  // namespace cc_blink