Allow background tab titles to use LCD AA.

cc/playback/display_item_list_unittest.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/playback/display_item_list.h"
 
 #include <vector>
 
 #include "cc/output/filter_operation.h"
 #include "cc/output/filter_operations.h"
@@ skipping 181 matching lines @@
   scoped_refptr<DisplayItemList> list =
       DisplayItemList::Create(gfx::Rect(layer_size), settings);
 
   // Build the DrawingDisplayItem.
   AppendFirstSerializationTestPicture(list, layer_size);
 
   // Build the CompositingDisplayItem.
   skia::RefPtr<SkColorFilter> filter = skia::AdoptRef(
       SkColorFilter::CreateLightingFilter(SK_ColorRED, SK_ColorGREEN));
   list->CreateAndAppendItem<CompositingDisplayItem>(
-      kVisualRect, 150, SkXfermode::Mode::kDst_Mode, nullptr, filter);
+      kVisualRect, 150, SkXfermode::Mode::kDst_Mode, nullptr, filter, false);

[danakj, 2015/12/11 19:07:00]

can you pass true here, false is easier to get right by accident?

 
   // Build the second DrawingDisplayItem.
   AppendSecondSerializationTestPicture(list, layer_size);
 
   // Build the EndCompositingDisplayItem.
   list->CreateAndAppendItem<EndCompositingDisplayItem>(kVisualRect);
 
   ValidateDisplayItemListSerialization(layer_size, list);
 }
 
@@ skipping 454 matching lines @@
   // picture and items are retained (currently this only happens due to certain
   // categories being traced).
   list = new DisplayItemList(layer_rect, caching_settings, true);
   list->CreateAndAppendItem<DrawingDisplayItem>(kVisualRect, picture);
   list->Finalize();
   memory_usage = list->ApproximateMemoryUsage();
   EXPECT_EQ(static_cast<size_t>(0), memory_usage);
 }
 
 }  // namespace cc