Implement on demand quad rasterization for PicturePiles.

cc/debug/debug_colors.cc

 // Copyright 2012 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/debug/debug_colors.h"
 
 #include "cc/trees/layer_tree_impl.h"
 
 namespace cc {
 
@@ skipping 110 matching lines @@
 }
 
 // Solid color tile borders are grey.
 SkColor DebugColors::SolidColorTileBorderColor() {
   return SkColorSetARGB(128, 128, 128, 128);
 }
 int DebugColors::SolidColorTileBorderWidth(const LayerTreeImpl* tree_impl) {
   return Scale(1, tree_impl);
 }
 
+// Picture tile borders are dark grey.
+SkColor DebugColors::PictureTileBorderColor() { return SkColorSetARGB(64, 64, 64, 0); }
+int DebugColors::PictureTileBorderWidth(const LayerTreeImpl* tree_impl) { return Scale(1, tree_impl); }
+
 // ======= Checkerboard colors =======
 
 // Non-debug checkerboards are grey.
 SkColor DebugColors::DefaultCheckerboardColor() {
   return SkColorSetRGB(241, 241, 241);
 }
 
 // Invalidated tiles get sky blue checkerboards.
 SkColor DebugColors::InvalidatedTileCheckerboardColor() {
   return SkColorSetRGB(128, 200, 245);
@@ skipping 109 matching lines @@
 SkColor DebugColors::MemoryDisplayTextColor() {
   return SkColorSetARGB(255, 220, 220, 220);
 }
 
 // Paint time display in green (similar to paint times in the WebInspector)
 SkColor DebugColors::PaintTimeDisplayTextAndGraphColor() {
   return SkColorSetRGB(75, 155, 55);
 }
 
 }  // namespace cc