Restructure the events target into two components:

content/content_browser.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': [
     'browser/speech/proto/speech_proto.gyp:speech_proto',
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../google_apis/google_apis.gyp:google_apis',
     '../net/net.gyp:net',
     '../skia/skia.gyp:skia',
     '../sql/sql.gyp:sql',
     '../third_party/re2/re2.gyp:re2',
     '../third_party/zlib/google/zip.gyp:zip',
     '../third_party/zlib/zlib.gyp:zlib',
-    '../ui/events/events.gyp:events',
+    '../ui/events/events.gyp:events_base',
     '../ui/gfx/gfx.gyp:gfx',
     '../ui/snapshot/snapshot.gyp:snapshot',
     '../ui/ui.gyp:ui',
     '../ui/ui.gyp:ui_resources',
   ],
   'include_dirs': [
     '..',
     '<(INTERMEDIATE_DIR)',
   ],
   'sources': [
@@ skipping 1195 matching lines @@
     'zygote/zygote_linux.h',
     'zygote/zygote_main_linux.cc',
     # These files are generated by GRIT.
     '<(SHARED_INTERMEDIATE_DIR)/webkit/grit/devtools_resources.h',
     '<(SHARED_INTERMEDIATE_DIR)/webkit/grit/devtools_resources_map.cc',
     '<(SHARED_INTERMEDIATE_DIR)/webkit/grit/devtools_resources_map.h',
     '<(SHARED_INTERMEDIATE_DIR)/content/browser/tracing/grit/tracing_resources.h',
     '<(SHARED_INTERMEDIATE_DIR)/ui/ui_resources/grit/webui_resources_map.cc',
   ],
   'conditions': [
+    ['toolkit_views==1', {
+      'dependencies': [
+        '../ui/events/events.gyp:events',
+      ],
+    }],
     ['OS!="win" and OS!="mac" and OS!="linux"', {
       'sources': [
         'browser/gamepad/gamepad_platform_data_fetcher.cc',
       ]
     }],
     ['OS=="ios"', {
       'sources/': [
         # iOS only needs a small portion of content; exclude all the
         # implementation, and re-include what is used.
         ['exclude', '\\.(cc|mm)$'],
@@ skipping 311 matching lines @@
         ['exclude', '^browser/speech/input_tag_speech_dispatcher_host\\.(cc|h)$'],
       ],
     }, {  # input_speech==1
       'dependencies': [
         '../third_party/flac/flac.gyp:libflac',
         '../third_party/speex/speex.gyp:libspeex',
       ],
     }],
   ],
 }