Disable failing test after WebKit roll.

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/test/trace_event_analyzer.h"
 #include "base/version.h"
@@ skipping 374 matching lines @@
 }
 
 class ThreadedCompositorTest : public GpuFeatureTest {
  public:
   virtual void SetUpCommandLine(CommandLine* command_line) {
     GpuFeatureTest::SetUpCommandLine(command_line);
     command_line->AppendSwitch(switches::kEnableThreadedCompositing);
   }
 };
 
-IN_PROC_BROWSER_TEST_F(ThreadedCompositorTest, ThreadedCompositor) {
+// disabled in http://crbug.com/123503
+IN_PROC_BROWSER_TEST_F(ThreadedCompositorTest, DISABLED_ThreadedCompositor) {
   const FilePath url(FILE_PATH_LITERAL("feature_compositing.html"));
   RunTest(url, EXPECT_GPU_SWAP_BUFFERS);
 }
 
 IN_PROC_BROWSER_TEST_F(GpuFeatureTest, RafNoDamage) {
   trace_categories_ = "-test_*";
   const FilePath url(FILE_PATH_LITERAL("feature_raf_no_damage.html"));
   RunTest(url, GpuResultFlags(0));
 
   if (!analyzer_.get())
@@ skipping 18 matching lines @@
   // indicate that the renderer is not simply spinning on RAF.
   EXPECT_GT(stats.mean_us, 15000.0);
 
   // Print out the trace events upon error to debug failures.
   if (stats.mean_us <= 15000.0) {
     fprintf(stderr, "\n\nTRACE JSON:\n\n%s\n\n", trace_events_json_.c_str());
   }
 }
 
 }  // namespace anonymous