Remove unused transparency display item functions.

public/platform/WebDisplayItemList.h

 // 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.
 
 #ifndef WebDisplayItemList_h
 #define WebDisplayItemList_h
 
 #include "WebBlendMode.h"
 #include "WebFloatPoint.h"
 #include "WebFloatRect.h"
 #include "WebRect.h"
 #include "WebSize.h"
 #include "WebVector.h"
 
 #include "third_party/skia/include/core/SkColorFilter.h"
 #include "third_party/skia/include/core/SkRRect.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "third_party/skia/include/core/SkXfermode.h"
 #include "third_party/skia/include/utils/SkMatrix44.h"
 
-// FIXME: Remove this once references to this macro in chromium are removed.
-#define FILTER_DISPLAY_ITEM_USES_FILTER_OPERATIONS 1

[ajuma, 2015/02/25 14:11:34]

Thanks for cleaning this up!

-
 class SkImageFilter;
 class SkMatrix44;
 class SkPicture;
 
 namespace blink {
 class WebFilterOperations;
 
 // An ordered list of items representing content to be rendered (stored in
 // 'drawing' items) and operations to be performed when rendering this content
-// (stored in 'clip', 'transform', 'transparency', and 'filter' items). See
-// http://dev.chromium.org/blink/slimming-paint for more details.
+// (stored in 'clip', 'transform', 'filter', etc...). For more details see:
+// http://dev.chromium.org/blink/slimming-paint.
 class WebDisplayItemList {
 public:
     virtual ~WebDisplayItemList() { }
 
     // This grabs a ref on the passed-in SkPicture.
     virtual void appendDrawingItem(const SkPicture*) = 0;
 
     virtual void appendClipItem(const WebRect&, const WebVector<SkRRect>&) = 0;
     virtual void appendEndClipItem() = 0;
     virtual void appendClipPathItem(const SkPath&, SkRegion::Op, bool antialias) = 0;
     virtual void appendEndClipPathItem() = 0;
     virtual void appendFloatClipItem(const WebFloatRect&) = 0;
     virtual void appendEndFloatClipItem() = 0;
     virtual void appendTransformItem(const SkMatrix44&) = 0;
     virtual void appendEndTransformItem() = 0;
-    virtual void appendTransparencyItem(float opacity, WebBlendMode) = 0;
-    virtual void appendEndTransparencyItem() = 0;
     virtual void appendCompositingItem(float opacity,
         SkXfermode::Mode, SkColorFilter*) = 0;
     virtual void appendEndCompositingItem() = 0;
 
     virtual void appendFilterItem(const WebFilterOperations&, const WebFloatRect& bounds) = 0;
     virtual void appendEndFilterItem() = 0;
 
     // Scroll containers are identified by an opaque pointer.
     using ScrollContainerId = const void*;
     virtual void appendScrollItem(const WebSize& scrollOffset, ScrollContainerId) = 0;
     virtual void appendEndScrollItem() = 0;
 };
 
 } // namespace blink
 
 #endif // WebDisplayItemList_h