Disabling GpuFeatureTest.MultisamplingAllowed on offical MacOSX bot.

chrome/test/gpu/gpu_feature_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 "base/command_line.h"
 #include "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
 #include "base/strings/stringprintf.h"
 #include "base/test/trace_event_analyzer.h"
@@ skipping 275 matching lines @@
     command_line->AppendSwitch(switches::kDisableExperimentalWebGL);
 #endif
   }
 };
 
 IN_PROC_BROWSER_TEST_F(WebGLTest, WebGLDisabled) {
   const base::FilePath url(FILE_PATH_LITERAL("feature_webgl.html"));
   RunEventTest(url, kWebGLCreationEvent, false);
 }
 
+#if defined(GOOGLE_CHROME_BUILD) && defined(OS_MACOSX)
+// http://crbug.com/314745
+#define MultisamplingAllowed DISABLED_MultisamplingAllowed
+#endif
 IN_PROC_BROWSER_TEST_F(GpuFeatureTest, MultisamplingAllowed) {
   EXPECT_FALSE(GpuDataManager::GetInstance()->IsFeatureBlacklisted(
       gpu::GPU_FEATURE_TYPE_MULTISAMPLING));
 
   // Multisampling is not supported if running on top of osmesa.
   if (gfx::GetGLImplementation() != gfx::kGLImplementationOSMesaGL)
     return;
 
   // Linux Intel uses mesa driver, where multisampling is not supported.
   // Multisampling is also not supported on virtualized mac os.
@@ skipping 259 matching lines @@
           base::StringPrintf(
               "%d (resize offset %d): IOSurface width %d -> %d; Creates %d "
               "Expected %d", offset_i, offsets[offset_i],
               old_width, new_width, num_creates, expected_creates);
     }
   }
 }
 #endif
 
 }  // namespace