Decouple Power Monitor from //content.

content/child/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/ui.gni")
 
 if (is_component_build) {
   link_target_type = "source_set"
 } else {
@@ skipping 112 matching lines @@
     "memory/child_memory_coordinator_impl_android.h",
     "memory/child_memory_message_filter.cc",
     "memory/child_memory_message_filter.h",
     "mojo/type_converters.h",
     "notifications/notification_data_conversions.cc",
     "notifications/notification_data_conversions.h",
     "notifications/notification_dispatcher.cc",
     "notifications/notification_dispatcher.h",
     "notifications/notification_manager.cc",
     "notifications/notification_manager.h",
-    "power_monitor_broadcast_source.cc",
-    "power_monitor_broadcast_source.h",
     "push_messaging/push_dispatcher.cc",
     "push_messaging/push_dispatcher.h",
     "push_messaging/push_provider.cc",
     "push_messaging/push_provider.h",
     "quota_dispatcher.cc",
     "quota_dispatcher.h",
     "quota_message_filter.cc",
     "quota_message_filter.h",
     "request_extra_data.cc",
     "request_extra_data.h",
@@ skipping 83 matching lines @@
     "//base",
     "//components/mime_util",
     "//components/tracing",
     "//components/tracing:startup_tracing",
     "//components/webcrypto",
     "//content/app/resources",
     "//content/app/strings",
     "//content/common",
     "//content/public/common:common_sources",
     "//crypto:platform",
+    "//device/power_monitor/public/cpp:power_monitor_broadcast_source",

[blundell, 2016/11/07 12:50:08]

nit: this target should just be called "cpp".

[ke.he, 2016/11/08 08:59:55]

Done.

     "//gpu/command_buffer/client",
     "//ipc",
     "//ipc:mojom",
     "//media",
     "//mojo/common",
     "//mojo/edk/system",
     "//net",
     "//services/service_manager/public/cpp",
     "//services/service_manager/public/interfaces",
     "//services/service_manager/runner/common",
@@ skipping 48 matching lines @@
 
 # See comment at the top of //content/BUILD.gn for how this works.
 group("for_content_tests") {
   visibility = [ "//content/test/*" ]
   if (!is_component_build) {
     public_deps = [
       ":child",
     ]
   }
 }