Add initial framework for performance tests that measure frame rate.

chrome/test/ui/ui_perf_test.h

 // 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.
 
 #ifndef CHROME_TEST_UI_UI_PERF_TEST_H_
 #define CHROME_TEST_UI_UI_PERF_TEST_H_
 #pragma once
 
 #include <string>
 
@@ skipping 27 matching lines @@
   // Like the above version of PrintResult(), but takes a std::string value
   // instead of a size_t.
   void PrintResult(const std::string& measurement,
                    const std::string& modifier,
                    const std::string& trace,
                    const std::string& value,
                    const std::string& units,
                    bool important);
 
   // Like PrintResult(), but prints a (mean, standard deviation) result pair.
-  // The |<values>| should be two comma-seaprated numbers, the mean and
+  // The |<values>| should be two comma-separated numbers, the mean and
   // standard deviation (or other error metric) of the measurement.
   void PrintResultMeanAndError(const std::string& measurement,
                                const std::string& modifier,
                                const std::string& trace,
                                const std::string& mean_and_error,
                                const std::string& units,
                                bool important);
 
   // Like PrintResult(), but prints an entire list of results. The |values|
   // will generally be a list of comma-separated numbers. A typical
@@ skipping 26 matching lines @@
                         const std::string& modifier,
                         const std::string& trace,
                         const std::string& values,
                         const std::string& prefix,
                         const std::string& suffix,
                         const std::string& units,
                         bool important);
 };
 
 #endif  // CHROME_TEST_UI_UI_PERF_TEST_H_