Mandoline: Add WebGL support

components/html_viewer/html_widget.cc

 // Copyright 2015 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 "components/html_viewer/html_widget.h"
 
+#include "base/command_line.h"
 #include "components/html_viewer/global_state.h"
 #include "components/html_viewer/ime_controller.h"
 #include "components/html_viewer/web_layer_tree_view_impl.h"
 #include "components/html_viewer/web_storage_namespace_impl.h"
 #include "components/mus/public/cpp/view.h"
 #include "mojo/application/public/cpp/application_impl.h"
 #include "third_party/WebKit/public/web/WebFrameWidget.h"
 #include "third_party/WebKit/public/web/WebSettings.h"
 #include "third_party/WebKit/public/web/WebView.h"
 #include "ui/gfx/geometry/dip_util.h"
 
 namespace html_viewer {
 namespace {
 
+const char kDisableWebGLSwitch[] = "disable-webgl";
+
 scoped_ptr<WebLayerTreeViewImpl> CreateWebLayerTreeView(
     GlobalState* global_state) {
   return make_scoped_ptr(new WebLayerTreeViewImpl(
       global_state->compositor_thread(),
       global_state->gpu_memory_buffer_manager(),
       global_state->raster_thread_helper()->task_graph_runner()));
 }
 
 void InitializeWebLayerTreeView(WebLayerTreeViewImpl* web_layer_tree_view,
                                 mojo::ApplicationImpl* app,
@@ skipping 17 matching lines @@
       blink::WebSize(size_in_dips.width(), size_in_dips.height()));
   web_layer_tree_view->setViewportSize(size_in_pixels);
 }
 
 void ConfigureSettings(blink::WebSettings* settings) {
   settings->setCookieEnabled(true);
   settings->setDefaultFixedFontSize(13);
   settings->setDefaultFontSize(16);
   settings->setLoadsImagesAutomatically(true);
   settings->setJavaScriptEnabled(true);
+
+  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
+  settings->setExperimentalWebGLEnabled(
+      !command_line->HasSwitch(kDisableWebGLSwitch));
 }
 
 }  // namespace
 
 // HTMLWidgetRootRemote -------------------------------------------------------
 
 HTMLWidgetRootRemote::HTMLWidgetRootRemote()
     : web_view_(blink::WebView::create(nullptr)) {
   ConfigureSettings(web_view_->settings());
 }
@@ skipping 128 matching lines @@
 
 void HTMLWidgetLocalRoot::didUpdateTextOfFocusedElementByNonUserInput() {
   ime_controller_->DidUpdateTextOfFocusedElementByNonUserInput();
 }
 
 void HTMLWidgetLocalRoot::showImeIfNeeded() {
   ime_controller_->ShowImeIfNeeded();
 }
 
 }  // namespace html_viewer