Implement WebKitPlatformSupport::canAccelerate2dCanvas

content/gpu/gpu_info_collector_win.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/gpu/gpu_info_collector.h"
 
 #include <windows.h>
 #include <d3d9.h>
 #include <setupapi.h>
 #include <winsatcominterfacei.h>
@@ skipping 88 matching lines @@
 namespace gpu_info_collector {
 
 bool CollectGraphicsInfo(content::GPUInfo* gpu_info) {
   DCHECK(gpu_info);
 
   gpu_info->performance_stats = RetrieveGpuPerformanceStats();
 
   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kUseGL)) {
     std::string requested_implementation_name =
         CommandLine::ForCurrentProcess()->GetSwitchValueASCII(switches::kUseGL);
-    if (requested_implementation_name == "swiftshader")
+    if (requested_implementation_name == "swiftshader") {
+      gpu_info->software_rendering = true;
       return false;
+    }
   }
 
   if (gfx::GetGLImplementation() != gfx::kGLImplementationEGLGLES2) {
     gpu_info->finalized = true;
     return CollectGraphicsInfoGL(gpu_info);
   }
 
   // TODO(zmo): the following code only works if running on top of ANGLE.
   // Need to handle the case when running on top of real EGL/GLES2 drivers.
 
@@ skipping 172 matching lines @@
 
   size_t pos = gl_version_string.find_last_not_of("0123456789.");
   if (pos != std::string::npos && pos < gl_version_string.length() - 1) {
     gpu_info->driver_version = gl_version_string.substr(pos + 1);
     return true;
   }
   return false;
 }
 
 }  // namespace gpu_info_collector