Enable disabling WebCore::GraphicsContext in telemetry.

webkit/renderer/compositor_bindings/web_content_layer_impl.cc

 // Copyright 2011 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 "webkit/renderer/compositor_bindings/web_content_layer_impl.h"
 
 #include "cc/layers/content_layer.h"
 #include "cc/layers/picture_layer.h"
 #include "third_party/WebKit/public/platform/WebContentLayerClient.h"
 #include "third_party/WebKit/public/platform/WebFloatPoint.h"
@@ skipping 33 matching lines @@
 
 void WebContentLayerImpl::setDrawCheckerboardForMissingTiles(bool enable) {
   layer_->layer()->SetDrawCheckerboardForMissingTiles(enable);
 }
 
 void WebContentLayerImpl::setHasGpuRasterizationHint(bool has_hint) {
   // TODO(ajuma): Convert per-layer GPU rasterization hints to per-layer
   // prepaint-disabling hints (crbug.com/365885).
 }
 
-void WebContentLayerImpl::PaintContents(SkCanvas* canvas,
-                                        const gfx::Rect& clip,
-                                        gfx::RectF* opaque) {
+void WebContentLayerImpl::PaintContents(
+    SkCanvas* canvas,
+    const gfx::Rect& clip,
+    gfx::RectF* opaque,
+    ContentLayerClient::GraphicsContextStatus graphics_context_status) {
   if (!client_)
     return;
 
   blink::WebFloatRect web_opaque;
   // For picture layers, always record with LCD text.  PictureLayerImpl
   // will turn this off later during rasterization.
   bool use_lcd_text = WebLayerImpl::UsingPictureLayer() || can_use_lcd_text_;
-  client_->paintContents(canvas, clip, use_lcd_text, web_opaque);
+  client_->paintContents(
+      canvas,
+      clip,
+      use_lcd_text,
+      web_opaque,
+      graphics_context_status == ContentLayerClient::GRAPHICS_CONTEXT_ENABLED
+          ? blink::WebContentLayerClient::GraphicsContextEnabled
+          : blink::WebContentLayerClient::GraphicsContextDisabled);
   *opaque = web_opaque;
 }
 
 void WebContentLayerImpl::DidChangeLayerCanUseLCDText() {
   // It is important to make this comparison because the LCD text status
   // here can get out of sync with that in the layer.
   if (can_use_lcd_text_ == layer_->layer()->can_use_lcd_text())
     return;
 
   // LCD text cannot be enabled once disabled.
   if (layer_->layer()->can_use_lcd_text() && ignore_lcd_text_change_)
     return;
 
   can_use_lcd_text_ = layer_->layer()->can_use_lcd_text();
   ignore_lcd_text_change_ = true;
   layer_->invalidate();
 }
 
 bool WebContentLayerImpl::FillsBoundsCompletely() const { return false; }
 
 }  // namespace webkit