Remove a DCHECK in GpuChannelMessageFilter

chrome/browser/policy/policy_browsertest.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 <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
 #include <memory>
 #include <string>
@@ skipping 1197 matching lines @@
     EXPECT_EQ(safe_search != 0,
               prefs->IsManagedPreference(prefs::kForceGoogleSafeSearch));
     EXPECT_EQ(safe_search == 1,
               prefs->GetBoolean(prefs::kForceGoogleSafeSearch));
 
     // Verify that safe search actually works.
     CheckSafeSearch(safe_search == 1);
   }
 }
 
-// Flaky. See http://crbug.com/662693.
-IN_PROC_BROWSER_TEST_F(PolicyTest, DISABLED_Disable3DAPIs) {
+IN_PROC_BROWSER_TEST_F(PolicyTest, Disable3DAPIs) {
   // This test assumes Gpu access.
   if (!content::GpuDataManager::GetInstance()->GpuAccessAllowed(NULL))
     return;
 
   ui_test_utils::NavigateToURL(browser(), GURL(url::kAboutBlankURL));
   // WebGL is enabled by default.
   content::WebContents* contents =
       browser()->tab_strip_model()->GetActiveWebContents();
   EXPECT_TRUE(IsWebGLEnabled(contents));
   // Disable with a policy.
@@ skipping 2998 matching lines @@
 
   SetEmptyPolicy();
   // Policy not set.
   CheckSystemTimezoneAutomaticDetectionPolicyUnset();
   EXPECT_TRUE(CheckResolveTimezoneByGeolocation(true, false));
   EXPECT_TRUE(manager->TimeZoneResolverShouldBeRunningForTests());
 }
 #endif  // defined(OS_CHROMEOS)
 
 }  // namespace policy