test_runner: Migrate MockWebMIDIAccessor to Chromium C++ style.

content/content_shell.gypi

 # 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.
 
 {
   'variables': {
     'content_shell_product_name': 'Content Shell',
     # The "19" is so that sites that sniff for version think that this is
     # something reasonably current; the "77.34.5" is a hint that this isn't a
     # standard Chrome.
@@ skipping 155 matching lines @@
         'shell/renderer/leak_detector.cc',
         'shell/renderer/leak_detector.h',
         'shell/renderer/shell_content_renderer_client.cc',
         'shell/renderer/shell_content_renderer_client.h',
         'shell/renderer/shell_render_frame_observer.cc',
         'shell/renderer/shell_render_frame_observer.h',
         'shell/renderer/shell_render_process_observer.cc',
         'shell/renderer/shell_render_process_observer.h',
         'shell/renderer/shell_render_view_observer.cc',
         'shell/renderer/shell_render_view_observer.h',
-        'shell/renderer/test_runner/MockWebMIDIAccessor.cpp',
-        'shell/renderer/test_runner/MockWebMIDIAccessor.h',
         'shell/renderer/test_runner/MockWebMediaStreamCenter.cpp',
         'shell/renderer/test_runner/MockWebMediaStreamCenter.h',
         'shell/renderer/test_runner/MockWebSpeechRecognizer.cpp',
         'shell/renderer/test_runner/MockWebSpeechRecognizer.h',
         'shell/renderer/test_runner/SpellCheckClient.cpp',
         'shell/renderer/test_runner/SpellCheckClient.h',
         'shell/renderer/test_runner/TestCommon.cpp',
         'shell/renderer/test_runner/TestCommon.h',
         'shell/renderer/test_runner/TestInterfaces.cpp',
         'shell/renderer/test_runner/TestInterfaces.h',
@@ skipping 15 matching lines @@
         'shell/renderer/test_runner/mock_constraints.cc',
         'shell/renderer/test_runner/mock_constraints.h',
         'shell/renderer/test_runner/mock_grammar_check.cc',
         'shell/renderer/test_runner/mock_grammar_check.h',
         'shell/renderer/test_runner/mock_screen_orientation_client.cc',
         'shell/renderer/test_runner/mock_screen_orientation_client.h',
         'shell/renderer/test_runner/mock_spell_check.cc',
         'shell/renderer/test_runner/mock_spell_check.h',
         'shell/renderer/test_runner/mock_web_audio_device.cc',
         'shell/renderer/test_runner/mock_web_audio_device.h',
+        'shell/renderer/test_runner/mock_web_midi_accessor.cc',
+        'shell/renderer/test_runner/mock_web_midi_accessor.h',
         'shell/renderer/test_runner/mock_web_push_client.cc',
         'shell/renderer/test_runner/mock_web_push_client.h',
         'shell/renderer/test_runner/mock_web_theme_engine.cc',
         'shell/renderer/test_runner/mock_web_theme_engine.h',
         'shell/renderer/test_runner/mock_web_theme_engine_mac.h',
         'shell/renderer/test_runner/mock_web_theme_engine_mac.mm',
         'shell/renderer/test_runner/mock_web_user_media_client.cc',
         'shell/renderer/test_runner/mock_web_user_media_client.h',
         'shell/renderer/test_runner/mock_webrtc_data_channel_handler.cc',
         'shell/renderer/test_runner/mock_webrtc_data_channel_handler.h',
@@ skipping 869 matching lines @@
                 '--input_symbol', '<(PRODUCT_DIR)/content_shell.exe.pdb',
                 '--destination_dir', '<(dest_dir)',
               ],
             },
           ],
         },
       ],
     }],  # OS=="win" and fastbuild==0 and target_arch=="ia32"
   ]
 }