cc: Low quality support for low res tiles

cc/resources/managed_tile_state.cc

 // Copyright 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 "cc/resources/managed_tile_state.h"
 
 #include <limits>
 
 #include "cc/base/math_util.h"
 
 namespace cc {
 
 ManagedTileState::ManagedTileState()
     : picture_pile_analyzed(false),
       gpu_memmgr_stats_bin(NEVER_BIN),
       resolution(NON_IDEAL_RESOLUTION),
       required_for_activation(false),
       time_to_needed_in_seconds(std::numeric_limits<float>::infinity()),
       distance_to_visible_in_pixels(std::numeric_limits<float>::infinity()) {
   for (int i = 0; i < NUM_TREES; ++i) {
     tree_bin[i] = NEVER_BIN;
     bin[i] = NEVER_BIN;
   }
 }
 
 ManagedTileState::TileVersion::TileVersion()
     : mode_(RESOURCE_MODE),
       resource_id_(0),
       resource_format_(GL_RGBA),
-      forced_upload_(false) {
+      forced_upload_(false),
+      raster_flags_(INVALID_RASTER_FLAG) {
 }
 
 ManagedTileState::TileVersion::~TileVersion() {
   DCHECK(!resource_);
 }
 
 bool ManagedTileState::TileVersion::IsReadyToDraw() const {
   switch (mode_) {
     case RESOURCE_MODE:
       return resource_id_ && (resource_ || forced_upload_);
@@ skipping 31 matching lines @@
   state->SetBoolean("is_picture_pile_analyzed", picture_pile_analyzed);
   state->SetBoolean("is_solid_color", picture_pile_analysis.is_solid_color);
   state->SetBoolean("is_transparent",
                     picture_pile_analysis.is_solid_color &&
                     !SkColorGetA(picture_pile_analysis.solid_color));
   return state.PassAs<base::Value>();
 }
 
 }  // namespace cc