Move GPU preliminary info collection back to UI thread.

chrome/test/gpu/gpu_feature_browsertest.cc

 // Copyright (c) 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 "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
 #include "base/test/trace_event_analyzer.h"
 #include "base/version.h"
 #include "chrome/browser/ui/browser.h"
@@ skipping 11 matching lines @@
  public:
   GpuFeatureTest() {}
 
   virtual void SetUpCommandLine(CommandLine* command_line) {
     // This enables DOM automation for tab contents.
     EnableDOMAutomation();
   }
 
   void SetupBlacklist(const std::string& json_blacklist) {
     scoped_ptr<Version> os_version(Version::GetVersionFromString("1.0"));
-    GpuBlacklist* blacklist = new GpuBlacklist("1.0 unknown");
+    GpuBlacklist* blacklist = new GpuBlacklist("1.0");
 
     ASSERT_TRUE(blacklist->LoadGpuBlacklist(
         json_blacklist, GpuBlacklist::kAllOs));
     GpuDataManager::GetInstance()->SetBuiltInGpuBlacklist(blacklist);
   }
 
   void RunTest(const FilePath& url, bool expect_gpu_process) {
     using namespace trace_analyzer;
 
     FilePath test_path;
@@ skipping 133 matching lines @@
       flags.flags(),
       static_cast<uint32>(GpuFeatureFlags::kGpuFeatureAccelerated2dCanvas));
 
   const bool expect_gpu_process = false;
   const FilePath url(FILE_PATH_LITERAL("feature_canvas2d.html"));
   RunTest(url, expect_gpu_process);
 }
 
 }  // namespace anonymous