Ensure we don't use SwiftShader to present Flash Fullscreen.

content/renderer/render_widget_fullscreen_pepper.cc

 // Copyright (c) 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 "content/renderer/render_widget_fullscreen_pepper.h"
 
 #include "base/bind.h"
+#include "base/command_line.h"
 #include "base/message_loop.h"
 #include "content/common/gpu/client/gpu_channel_host.h"
 #include "content/common/view_messages.h"
+#include "content/public/common/content_switches.h"
 #include "content/renderer/pepper/pepper_platform_context_3d_impl.h"
 #include "content/renderer/render_thread_impl.h"
 #include "gpu/command_buffer/client/gles2_implementation.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebGraphicsContext3D.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebCursorInfo.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebSize.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebWidget.h"
 #include "ui/gl/gpu_preference.h"
 #include "webkit/plugins/ppapi/plugin_delegate.h"
 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
@@ skipping 404 matching lines @@
 WebWidget* RenderWidgetFullscreenPepper::CreateWebWidget() {
   return new PepperWidget(this);
 }
 
 bool RenderWidgetFullscreenPepper::SupportsAsynchronousSwapBuffers() {
   return context_ != NULL;
 }
 
 void RenderWidgetFullscreenPepper::CreateContext() {
   DCHECK(!context_);
+  CommandLine* command_line = CommandLine::ForCurrentProcess();
+  if (command_line->HasSwitch(switches::kDisableFlashFullscreen3d))
+    return;
   WebKit::WebGraphicsContext3D::Attributes attributes;
   attributes.depth = false;
   attributes.stencil = false;
   attributes.antialias = false;
   attributes.shareResources = false;
   context_ = WebGraphicsContext3DCommandBufferImpl::CreateViewContext(
       RenderThreadImpl::current(),
       surface_id(),
       NULL,
       attributes,
@@ skipping 130 matching lines @@
 
 WebGraphicsContext3DCommandBufferImpl*
 RenderWidgetFullscreenPepper::GetParentContextForPlatformContext3D() {
   if (!context_) {
     CreateContext();
   }
   if (!context_)
     return NULL;
   return context_;
 }