clang/win: Fix most -Wunused-function warnings in Chromium code.

skia/ext/benchmarking_canvas.cc

 // Copyright (c) 2013 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 "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "base/time/time.h"
 #include "skia/ext/benchmarking_canvas.h"
 #include "third_party/skia/include/core/SkColorFilter.h"
 #include "third_party/skia/include/core/SkImageFilter.h"
@@ skipping 289 matching lines @@
 
 WARN_UNUSED_RESULT
 scoped_ptr<base::Value> AsValue(const SkRegion& region) {
   scoped_ptr<base::DictionaryValue> val(new base::DictionaryValue());
   val->Set("bounds", AsValue(SkRect::Make(region.getBounds())));
 
   return val.Pass();
 }
 
 WARN_UNUSED_RESULT
-scoped_ptr<base::Value> AsValue(const SkPicture& picture) {
-  scoped_ptr<base::DictionaryValue> val(new base::DictionaryValue());
-  val->Set("cull-rect", AsValue(picture.cullRect()));
-
-  return val.Pass();
-}
-
-WARN_UNUSED_RESULT
 scoped_ptr<base::Value> AsValue(const SkBitmap& bitmap) {
   scoped_ptr<base::DictionaryValue> val(new base::DictionaryValue());
   val->Set("size", AsValue(SkSize::Make(bitmap.width(), bitmap.height())));
 
   return val.Pass();
 }
 
 WARN_UNUSED_RESULT
 scoped_ptr<base::Value> AsValue(const SkImage& image) {
   scoped_ptr<base::DictionaryValue> val(new base::DictionaryValue());
@@ skipping 484 matching lines @@
   DCHECK(blob);
   AutoOp op(this, "DrawTextBlob", &paint);
   op.addParam("blob", AsValue(*blob));
   op.addParam("x", AsValue(x));
   op.addParam("y", AsValue(y));
 
   INHERITED::onDrawTextBlob(blob, x, y, *op.paint());
 }
 
 } // namespace skia