cc: Default initialize solid color in tile version constructor.

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"
 
@@ skipping 36 matching lines @@
 ManagedTileState::ManagedTileState()
     : raster_mode(LOW_QUALITY_RASTER_MODE),
       bin(NEVER_BIN),
       resolution(NON_IDEAL_RESOLUTION),
       required_for_activation(false),
       priority_bin(TilePriority::EVENTUALLY),
       distance_to_visible(std::numeric_limits<float>::infinity()),
       visible_and_ready_to_draw(false),
       scheduled_priority(0) {}
 
-ManagedTileState::TileVersion::TileVersion() : mode_(RESOURCE_MODE) {
+ManagedTileState::TileVersion::TileVersion()
+    : mode_(RESOURCE_MODE), solid_color_(SK_ColorWHITE) {
 }
 
 ManagedTileState::TileVersion::~TileVersion() { DCHECK(!resource_); }
 
 bool ManagedTileState::TileVersion::IsReadyToDraw() const {
   switch (mode_) {
     case RESOURCE_MODE:
       return !!resource_;
     case SOLID_COLOR_MODE:
     case PICTURE_PILE_MODE:
@@ skipping 35 matching lines @@
       tile_versions[raster_mode].mode_ == TileVersion::SOLID_COLOR_MODE);
   state->SetBoolean(
       "is_transparent",
       tile_versions[raster_mode].mode_ == TileVersion::SOLID_COLOR_MODE &&
           !SkColorGetA(tile_versions[raster_mode].solid_color_));
   state->SetInteger("scheduled_priority", scheduled_priority);
   return state.PassAs<base::Value>();
 }
 
 }  // namespace cc