Use only the steady gesture in frame rate tests.

chrome/test/perf/frame_rate/frame_rate_tests.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 <map>
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/string_number_conversions.h"
@@ skipping 66 matching lines @@
       test_path = test_path.Append(FILE_PATH_LITERAL("content"));
     }
     test_path = test_path.AppendASCII(name);
     return test_path;
   }
 
   virtual void SetUp() {
     if (HasFlag(kUseReferenceBuild))
       UseReferenceBuild();
 
+    // Turn on chrome.Interval to get higher-resolution timestamps on frames.
+    launch_arguments_.AppendSwitch(switches::kEnableBenchmarking);
+
     // UI tests boot up render views starting from about:blank. This causes
     // the renderer to start up thinking it cannot use the GPU. To work
     // around that, and allow the frame rate test to use the GPU, we must
     // pass kAllowWebUICompositing.
     launch_arguments_.AppendSwitch(switches::kAllowWebUICompositing);
 
     // Some of the tests may launch http requests through JSON or AJAX
     // which causes a security error (cross domain request) when the page
     // is loaded from the local file system ( file:// ). The following switch
     // fixes that error.
@@ skipping 185 matching lines @@
     kInternal | kHasRedirect | kUseGpu,
     kInternal | kHasRedirect | kUseGpu | kDisableVsync,
     kUseReferenceBuild | kInternal | kHasRedirect | kUseGpu,
     kUseReferenceBuild | kInternal | kHasRedirect | kUseGpu | kDisableVsync));
 
 INTERNAL_FRAME_RATE_TEST_CANVAS_GPU(fireflies)
 INTERNAL_FRAME_RATE_TEST_CANVAS_GPU(FishIE)
 INTERNAL_FRAME_RATE_TEST_CANVAS_GPU(speedreading)
 
 }  // namespace