Decouple PowerUsageMonitor{Impl} from //content/browser

content/browser/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")
 import("//media/media_options.gni")
 import("//tools/ipc_fuzzer/ipc_fuzzer.gni")
 
 source_set("browser") {
@@ skipping 904 matching lines @@
     "notifications/platform_notification_context_impl.cc",
     "notifications/platform_notification_context_impl.h",
     "notifications/type_converters.cc",
     "notifications/type_converters.h",
     "permissions/permission_service_context.cc",
     "permissions/permission_service_context.h",
     "permissions/permission_service_impl.cc",
     "permissions/permission_service_impl.h",
     "power_monitor_message_broadcaster.cc",
     "power_monitor_message_broadcaster.h",
-    "power_usage_monitor_impl.cc",
-    "power_usage_monitor_impl.h",
     "presentation/presentation_service_impl.cc",
     "presentation/presentation_service_impl.h",
     "presentation/presentation_type_converters.cc",
     "presentation/presentation_type_converters.h",
     "profiler_controller_impl.cc",
     "profiler_controller_impl.h",
     "profiler_message_filter.cc",
     "profiler_message_filter.h",
     "push_messaging/push_messaging_message_filter.cc",
     "push_messaging/push_messaging_message_filter.h",
@@ skipping 776 matching lines @@
       "web_contents/web_contents_android.h",
       "web_contents/web_contents_view_android.cc",
       "web_contents/web_contents_view_android.h",
     ]
     sources -= [
       "browser_ipc_logging.cc",
       "device_sensors/data_fetcher_shared_memory_default.cc",
       "media/session/audio_focus_delegate_default.cc",
       "media/session/audio_focus_manager.cc",
       "media/session/audio_focus_manager.h",
-      "power_usage_monitor_impl.cc",
-      "power_usage_monitor_impl.h",
       "tracing/tracing_ui.cc",
       "tracing/tracing_ui.h",
 
       # Android skips most, but not all, of the speech code.
       "speech/audio_buffer.cc",
       "speech/audio_buffer.h",
       "speech/audio_encoder.cc",
       "speech/audio_encoder.h",
       "speech/chunked_byte_buffer.cc",
       "speech/chunked_byte_buffer.h",
@@ skipping 206 matching lines @@
   if (!is_component_build) {
     public_deps = [
       ":browser",
     ]
   } else {
     public_deps = [
       "//third_party/leveldatabase",
     ]
   }
 }