Add UMA protocol buffers to Chrome.

chrome/chrome_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.
 
 {
   'targets': [
     {
       'target_name': 'common',
       'type': 'static_library',
       'variables': {
@@ skipping 10 matching lines @@
           '..',
         ],
       },
       'dependencies': [
         # TODO(gregoryd): chrome_resources and chrome_strings could be
         #  shared with the 64-bit target, but it does not work due to a gyp
         # issue.
         'common_constants',
         'common_net',
         'common_version',
+        'metrics_proto',
         '<(DEPTH)/base/base.gyp:base',
         '<(DEPTH)/base/base.gyp:base_i18n',
         '<(DEPTH)/base/base.gyp:base_static',
         '<(DEPTH)/build/temp_gyp/googleurl.gyp:googleurl',
         '<(DEPTH)/chrome/app/policy/cloud_policy_codegen.gyp:policy',
         '<(DEPTH)/chrome/chrome_resources.gyp:chrome_resources',
         '<(DEPTH)/chrome/chrome_resources.gyp:chrome_strings',
         '<(DEPTH)/chrome/chrome_resources.gyp:theme_resources',
         '<(DEPTH)/content/content.gyp:content_common',
         '<(DEPTH)/ipc/ipc.gyp:ipc',
@@ skipping 405 matching lines @@
       'sources': [
         'common/safe_browsing/client_model.proto',
         'common/safe_browsing/csd.proto'
       ],
       'variables': {
         'proto_in_dir': 'common/safe_browsing',
         'proto_out_dir': 'chrome/common/safe_browsing',
       },
       'includes': [ '../build/protoc.gypi' ],
     },
+    {
+      # Protobuf compiler / generator for UMA (User Metrics Analysis).
+      'target_name': 'metrics_proto',
+      'type': 'static_library',
+      'sources': [
+        'common/metrics/proto/chrome_user_metrics_extension.proto',
+        'common/metrics/proto/histogram_event.proto',
+        'common/metrics/proto/omnibox_event.proto',
+        'common/metrics/proto/system_profile.proto',
+        'common/metrics/proto/user_action_event.proto',
+      ],
+      'variables': {
+        'proto_in_dir': 'common/metrics/proto',
+        'proto_out_dir': 'chrome/common/metrics/proto',
+      },
+      'includes': [ '../build/protoc.gypi' ],
+    },
   ],
 }