Added support for GPU Tracing on mobile devices which support it.

gpu/command_buffer/service/gpu_tracer_unittest.cc

 // Copyright 2014 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 <set>
 
 #include "gpu/command_buffer/service/gpu_service_test.h"
 #include "gpu/command_buffer/service/gpu_tracer.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 162 matching lines @@
         (start_timestamp / base::Time::kNanosecondsPerMicrosecond) +
         offset_time;
     const int64 expect_end_time =
         (end_timestamp / base::Time::kNanosecondsPerMicrosecond) + offset_time;
 
     // Expected Outputter::Trace call
     EXPECT_CALL(*outputter,
                 Trace(trace_name, expect_start_time, expect_end_time));
 
     scoped_refptr<GPUTrace> trace =
-        new GPUTrace(outputter_ref, trace_name, offset_time);
+        new GPUTrace(outputter_ref, trace_name, offset_time,
+                     kTracerTypeARBTimer);
 
     gl_fake_queries_.SetCurrentGLTime(start_timestamp);
     trace->Start();
 
     // Shouldn't be available before End() call
     gl_fake_queries_.SetCurrentGLTime(end_timestamp);
     EXPECT_FALSE(trace->IsAvailable());
 
     trace->End();
 
     // Shouldn't be available until the queries complete
     gl_fake_queries_.SetCurrentGLTime(end_timestamp -
                                       base::Time::kNanosecondsPerMicrosecond);
     EXPECT_FALSE(trace->IsAvailable());
 
     // Now it should be available
     gl_fake_queries_.SetCurrentGLTime(end_timestamp);
     EXPECT_TRUE(trace->IsAvailable());
 
     // Proces should output expected Trace results to MockOutputter
     trace->Process();
   }
 }
 
 }  // namespace gles2
 }  // namespace gpu