Introduce the ability to wait for the watcher process to initialize.

chrome/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/features.gni")
 import("//build/config/locales.gni")
 import("//build/config/ui.gni")
 import("//chrome/chrome_repack_locales.gni")
 import("//chrome/version.gni")
 
@@ skipping 14 matching lines @@
     deps = []
     datadeps = []
 
     # TODO(GYP) mac_bundle_resources, xcode_settings
 
     # TODO(GYP) order_profiling, order_text_section
 
     if (is_win) {
       sources += [
         "app/chrome_exe_main_win.cc",
+        "app/chrome_watcher_client_win.cc",
+        "app/chrome_watcher_client_win.h",
+        "app/chrome_watcher_command_line_win.cc",
+        "app/chrome_watcher_command_line_win.h",
         "app/client_util.cc",
         "app/client_util.h",
         "app/signature_validator_win.cc",
         "app/signature_validator_win.h",
         "//content/app/startup_helper_win.cc",
       ]
       deps += [ "//ui/gfx" ]
     } else if (use_aura) {
       # Non-Windows aura entrypoint.
       sources += [ "app/chrome_exe_main_aura.cc" ]
@@ skipping 537 matching lines @@
       "//chrome/browser",
       "//chrome/browser/ui",
       "//chrome/plugin",
       "//chrome/renderer",
       "//chrome/utility",
       "//components/enhanced_bookmarks",
       "//content/public/app:browser",
     ]
   }
 }