Introduce gpu_trace_event for gpu performance analysis.

gpu/gpu.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
     # These are defined here because we need to build this library twice. Once
     # with extra parameter checking. Once with no parameter checking to be 100%
     # OpenGL ES 2.0 compliant for the conformance tests.
     'gles2_c_lib_source_files': [
       'command_buffer/client/gles2_c_lib.cc',
       'command_buffer/client/gles2_c_lib_autogen.h',
       'command_buffer/client/gles2_lib.h',
       'command_buffer/client/gles2_lib.cc',
     ],
     # These are defined here because we need to build this library twice. Once
     # with without support for client side arrays and once with for pepper and
     # the OpenGL ES 2.0 compliant for the conformance tests.
     'gles2_implementation_source_files': [
       'command_buffer/client/gles2_implementation_autogen.h',
       'command_buffer/client/gles2_implementation.cc',
       'command_buffer/client/gles2_implementation.h',
     ]
   },
   'targets': [
     {
+      'target_name': 'gpu_common',
+      'type': 'static_library',
+      'dependencies': [
+        '../base/base.gyp:base',
+      ],
+      'include_dirs': [
+        '..',
+      ],
+      'sources': [
+        'common/gpu_trace_event.cc',
+        'common/gpu_trace_event.h',
+      ],
+    },
+    {
       'target_name': 'command_buffer_common',
       'type': 'static_library',
       'include_dirs': [
         '.',
       ],
       'all_dependent_settings': {
         'include_dirs': [
           '.',
         ],
       },
@@ skipping 347 matching lines @@
       },
     ],
   ],
 }
 
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