Convert startup_metric_utils to use mojo.

components/startup_metric_utils.gypi

 # Copyright 2013 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.
 
 # We have 2 separate browser targets because //components/html_viewer requires
 # startup_metric_utils_browser, but has symbols that conflict with mojo symbols
-# that startup_metric_utils_browser_message_filter indirectly depends on.
+# that startup_metric_utils_browser_host indirectly depends on.
 
 {
   'targets': [
     {
       # GN version: //components/startup_metric_utils/browser:lib
       'target_name': 'startup_metric_utils_browser',
       'type': 'static_library',
       'dependencies': [
         '../base/base.gyp:base',
         'components.gyp:version_info',
         'prefs/prefs.gyp:prefs',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         'startup_metric_utils/browser/pref_names.cc',
         'startup_metric_utils/browser/pref_names.h',
         'startup_metric_utils/browser/startup_metric_utils.cc',
         'startup_metric_utils/browser/startup_metric_utils.h',
       ],
     },
     {
-      # GN version: //components/startup_metric_utils/browser:message_filter_lib
-      'target_name': 'startup_metric_utils_browser_message_filter',
+      # GN version: //components/startup_metric_utils/browser:host
+      'target_name': 'startup_metric_utils_browser_host',
       'type': 'static_library',
       'dependencies': [
         '../base/base.gyp:base',
         '../content/content.gyp:content_browser',
         'startup_metric_utils_browser',
-        'startup_metric_utils_common',
+        'startup_metric_utils_interfaces'
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
-        'startup_metric_utils/browser/startup_metric_message_filter.cc',
-        'startup_metric_utils/browser/startup_metric_message_filter.h',
+        'startup_metric_utils/browser/startup_metric_host_impl.cc',
+        'startup_metric_utils/browser/startup_metric_host_impl.h',
       ],
     },
     {
       # GN version: //components/startup_metric_utils/common
       'target_name': 'startup_metric_utils_common',

[sky, 2016/06/08 16:19:47]

I found reviewing the changes in the chrome side mildly confusing because of the
renames here. In particular as this is win only it would be better if it were
named as such, eg startup_metric_utils_win.

[Sam McNally, 2016/06/09 00:20:53]

Done.

       'type': 'static_library',
       'dependencies': [
         '../base/base.gyp:base',
-        '../ipc/ipc.gyp:ipc',
         'components.gyp:variations',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         'startup_metric_utils/common/pre_read_field_trial_utils_win.cc',
         'startup_metric_utils/common/pre_read_field_trial_utils_win.h',
-        'startup_metric_utils/common/startup_metric_message_generator.cc',
-        'startup_metric_utils/common/startup_metric_message_generator.h',
-        'startup_metric_utils/common/startup_metric_messages.h',
+      ],
+    },
+    {
+      # GN version: //components/startup_metric_utils/common:interfaces
+      'target_name': 'startup_metric_utils_interfaces',
+      'type': 'static_library',
+      'sources': [
+        'startup_metric_utils/common/startup_metric.mojom',
+      ],
+      'dependencies': [
+        '<(DEPTH)/mojo/mojo_base.gyp:mojo_common_custom_types_mojom',
+      ],
+      'variables': {
+        'mojom_typemaps': [
+          '<(DEPTH)/mojo/common/common_custom_types.typemap',
+        ],
+      },
+      'includes': [
+        '../mojo/mojom_bindings_generator.gypi',
       ],
     },
   ],
 }