Collect GL_EXTENSIONS string in GPUInfo and display it in about:gpu page....

chrome/browser/dom_ui/gpu_internals_ui.cc

 // Copyright (c) 2010 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 "chrome/browser/dom_ui/gpu_internals_ui.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 277 matching lines @@
   basic_info->Append(NewDescriptionValuePair("Vertex shader version",
       VersionNumberToString(gpu_info.vertex_shader_version())));
   basic_info->Append(NewDescriptionValuePair("GL version",
       VersionNumberToString(gpu_info.gl_version())));
   basic_info->Append(NewDescriptionValuePair("GL_VENDOR",
       gpu_info.gl_vendor()));
   basic_info->Append(NewDescriptionValuePair("GL_RENDERER",
       gpu_info.gl_renderer()));
   basic_info->Append(NewDescriptionValuePair("GL_VERSION",
       gpu_info.gl_version_string()));
+  basic_info->Append(NewDescriptionValuePair("GL_EXTENSIONS",
+      gpu_info.gl_extensions()));
 
   DictionaryValue* info = new DictionaryValue();
   info->Set("basic_info", basic_info);
 
   if (gpu_info.progress() == GPUInfo::kPartial) {
     info->SetString("progress", "partial");
   } else {
     info->SetString("progress", "complete");
   }
 #if defined(OS_WIN)
@@ skipping 40 matching lines @@
 
   // Set up the chrome://gpu/ source.
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       NewRunnableMethod(
           ChromeURLDataManager::GetInstance(),
           &ChromeURLDataManager::AddDataSource,
           make_scoped_refptr(html_source)));
 }