HUD: Show first paint invalidation in red

cc/blink/web_layer_impl.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/blink/web_layer_impl.h"
 
 #include "base/bind.h"
 #include "base/debug/trace_event_impl.h"
 #include "base/lazy_instance.h"
 #include "base/strings/string_util.h"
@@ skipping 65 matching lines @@
 }
 
 void WebLayerImpl::invalidateRect(const blink::WebFloatRect& rect) {
   layer_->SetNeedsDisplayRect(rect);
 }
 
 void WebLayerImpl::invalidate() {
   layer_->SetNeedsDisplay();
 }
 
+void WebLayerImpl::setIncludesFirstPaintInvalidation() {
+  layer_->SetIncludesFirstPaintInvalidation();
+}
+
 void WebLayerImpl::addChild(WebLayer* child) {
   layer_->AddChild(static_cast<WebLayerImpl*>(child)->layer());
 }
 
 void WebLayerImpl::insertChild(WebLayer* child, size_t index) {
   layer_->InsertChild(static_cast<WebLayerImpl*>(child)->layer(), index);
 }
 
 void WebLayerImpl::replaceChild(WebLayer* reference, WebLayer* new_layer) {
   layer_->ReplaceChild(static_cast<WebLayerImpl*>(reference)->layer(),
@@ skipping 374 matching lines @@
   if (parent)
     clip_parent = static_cast<WebLayerImpl*>(parent)->layer();
   layer_->SetClipParent(clip_parent);
 }
 
 Layer* WebLayerImpl::layer() const {
   return layer_.get();
 }
 
 }  // namespace cc_blink