Add test for RAF-spinning with no damage

chrome/test/perf/rendering/throughput_tests.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_path.h"
 #include "base/file_util.h"
 #include "base/json/json_reader.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
@@ skipping 322 matching lines @@
       EXPECT_EQ(0u, events_sw.size());
     } else {
       frames = &events_sw;
       EXPECT_EQ(0u, events_gpu.size());
     }
     ASSERT_GT(frames->size(), 20u);
     // Cull a few leading and trailing events as they might be unreliable.
     TraceEventVector rate_events(frames->begin() + kIgnoreSomeFrames,
                                  frames->end() - kIgnoreSomeFrames);
     trace_analyzer::RateStats stats;
-    ASSERT_TRUE(GetRateStats(rate_events, &stats));
+    ASSERT_TRUE(GetRateStats(rate_events, &stats, NULL));
     LOG(INFO) << "FPS = " << 1000000.0 / stats.mean_us;
 
     // Print perf results.
     double mean_ms = stats.mean_us / 1000.0;
     double std_dev_ms = stats.standard_deviation_us / 1000.0 / 1000.0;
     std::string trace_name = ran_on_gpu ? "gpu" : "software";
     std::string mean_and_error = base::StringPrintf("%f,%f", mean_ms,
                                                     std_dev_ms);
     perf_test::PrintResultMeanAndError(test_name, "", trace_name,
                                        mean_and_error, "frame_time", true);
@@ skipping 164 matching lines @@
 
 IN_PROC_BROWSER_TEST_F(ThroughputTestSW, CanvasManyImagesSW) {
   RunCanvasBenchTest("many_images", kNone);
 }
 
 IN_PROC_BROWSER_TEST_F(ThroughputTestGPU, CanvasManyImagesGPU) {
   RunCanvasBenchTest("many_images", kNone);
 }
 
 }  // namespace