Add breakpad component to GN build.

components/breakpad.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.
 
 {
   'targets': [
     {
       'target_name': 'breakpad_component_lib',
       'type': 'static_library',
       'sources': [
@@ skipping 15 matching lines @@
             # can't have libraries with zero objects.
             'breakpad_component_target_type%': 'none',
           }, {
             'breakpad_component_target_type%': 'static_library',
           }],
         ],
       },
       # Note: if you depend on this target, you need to either link in
       # content.gyp:content_common, or add
       # content/public/common/content_switches.cc to your sources.
+      #
+      # GN version: //components/breakpad/app
       'target_name': 'breakpad_component',
       'type': '<(breakpad_component_target_type)',
       'sources': [
         'breakpad/app/breakpad_linux.cc',
         'breakpad/app/breakpad_linux.h',
         'breakpad/app/breakpad_linux_impl.h',
         'breakpad/app/breakpad_mac.h',
         'breakpad/app/breakpad_mac.mm',
         'breakpad/app/breakpad_win.cc',
         'breakpad/app/breakpad_win.h',
@@ skipping 31 matching lines @@
         # Need 'target_conditions' to override default filename_rules to include
         # the files on Android.
         ['OS=="android"', {
           'sources/': [
             ['include', '^breakpad/app/breakpad_linux\\.cc$'],
           ],
         }],
       ],
     },
     {
+      # GN version: //components/breakpad/app:test_support
       'target_name': 'breakpad_test_support',
       'type': 'none',
       'dependencies': [
         'breakpad_component_lib',
       ],
       'direct_dependent_settings': {
         'include_dirs' : [
           '../breakpad/src',
         ],
       }
     },
   ],
   'conditions': [
     ['OS=="win"', {
       'targets': [
         {
+          # GN version: //components/breakpad/tools:crash_service
           'target_name': 'breakpad_crash_service',
           'type': 'static_library',
           'dependencies': [
             '../base/base.gyp:base',
             '../breakpad/breakpad.gyp:breakpad_handler',
             '../breakpad/breakpad.gyp:breakpad_sender',
           ],
           'sources': [
             'breakpad/tools/crash_service.cc',
             'breakpad/tools/crash_service.h',
@@ skipping 74 matching lines @@
             'breakpad/app/breakpad_client.h',
             'breakpad/app/breakpad_mac.h',
             'breakpad/app/breakpad_mac_stubs.mm',
           ],
         },
       ],
     }],
     ['os_posix == 1 and OS != "mac" and OS != "ios" and android_webview_build != 1', {
       'targets': [
         {
+          # GN version: //components/breakpad/browser
           'target_name': 'breakpad_host',
           'type': 'static_library',
           'dependencies': [
             'breakpad_component',
             '../base/base.gyp:base',
             '../breakpad/breakpad.gyp:breakpad_client',
             '../content/content.gyp:content_browser',
             '../content/content.gyp:content_common',
           ],
           'sources': [
@@ skipping 12 matching lines @@
               'sources/': [
                 ['include', '^breakpad/browser/crash_handler_host_linux\\.cc$'],
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }