Add a new pair of IPC categories for messages that need handling as input events

content/content_common.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.
 
 {
   'dependencies': [
     '../base/base.gyp:base',
     '../build/temp_gyp/googleurl.gyp:googleurl',
     '../components/tracing.gyp:tracing',
     '../media/media.gyp:media',
@@ skipping 261 matching lines @@
     'common/indexed_db/indexed_db_dispatcher.cc',
     'common/indexed_db/indexed_db_dispatcher.h',
     'common/indexed_db/indexed_db_message_filter.cc',
     'common/indexed_db/indexed_db_message_filter.h',
     'common/indexed_db/proxy_webidbcursor_impl.cc',
     'common/indexed_db/proxy_webidbcursor_impl.h',
     'common/indexed_db/proxy_webidbdatabase_impl.cc',
     'common/indexed_db/proxy_webidbdatabase_impl.h',
     'common/indexed_db/proxy_webidbfactory_impl.cc',
     'common/indexed_db/proxy_webidbfactory_impl.h',
+    'common/input_messages.h',
     'common/inter_process_time_ticks_converter.cc',
     'common/inter_process_time_ticks_converter.h',
     'common/java_bridge_messages.h',
     'common/mac/attributed_string_coder.h',
     'common/mac/attributed_string_coder.mm',
     'common/mac/font_descriptor.h',
     'common/mac/font_descriptor.mm',
     'common/mac/font_loader.h',
     'common/mac/font_loader.mm',
     'common/media/audio_messages.h',
@@ skipping 288 matching lines @@
         '..\\third_party\\directxsdk\\files\\Redist\\<(input)',
         '<(output)',
         '<(PRODUCT_DIR)',
         ],
         'msvs_cygwin_shell': 1,
       },
      ]
     }],
   ],
 }