Update from https://crrev.com/316786

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 "base/macros.h"
 
 #include "cc/debug/debug_colors.h"
 
 #include "cc/trees/layer_tree_impl.h"
 
@@ skipping 198 matching lines @@
 
 // Layer screen space rects in purple.
 SkColor DebugColors::ScreenSpaceSurfaceReplicaRectBorderColor() {
   return SkColorSetARGB(255, 100, 0, 200);
 }
 int DebugColors::ScreenSpaceSurfaceReplicaRectBorderWidth() { return 2; }
 SkColor DebugColors::ScreenSpaceSurfaceReplicaRectFillColor() {
   return SkColorSetARGB(10, 100, 0, 200);
 }
 
-// Occluding rects in pink.
-SkColor DebugColors::OccludingRectBorderColor() {
-  return SkColorSetARGB(255, 245, 136, 255);
-}
-int DebugColors::OccludingRectBorderWidth() { return 2; }
-SkColor DebugColors::OccludingRectFillColor() {
-  return SkColorSetARGB(10, 245, 136, 255);
-}
-
-// Non-Occluding rects in a reddish color.
-SkColor DebugColors::NonOccludingRectBorderColor() {
-  return SkColorSetARGB(255, 200, 0, 100);
-}
-int DebugColors::NonOccludingRectBorderWidth() { return 2; }
-SkColor DebugColors::NonOccludingRectFillColor() {
-  return SkColorSetARGB(10, 200, 0, 100);
-}
-
 // Touch-event-handler rects in yellow.
 SkColor DebugColors::TouchEventHandlerRectBorderColor() {
   return SkColorSetARGB(255, 239, 229, 60);
 }
 int DebugColors::TouchEventHandlerRectBorderWidth() { return 2; }
 SkColor DebugColors::TouchEventHandlerRectFillColor() {
   return SkColorSetARGB(30, 239, 229, 60);
 }
 
 // Wheel-event-handler rects in green.
@@ skipping 65 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