Schedule idle handler in the foreground tab based on CPU usage and user activity.

content/content_renderer.gypi

 # Copyright (c) 2011 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.
 
 {
   'dependencies': [
     '../jingle/jingle.gyp:jingle_glue',
     '../net/net.gyp:net',
     '../ppapi/ppapi_internal.gyp:ppapi_proxy',
     '../skia/skia.gyp:skia',
@@ skipping 51 matching lines @@
     'renderer/gpu/gpu_video_decode_accelerator_host.cc',
     'renderer/gpu/gpu_video_decode_accelerator_host.h',
     'renderer/gpu/renderer_gl_context.cc',
     'renderer/gpu/renderer_gl_context.h',
     'renderer/gpu/transport_texture_host.cc',
     'renderer/gpu/transport_texture_host.h',
     'renderer/gpu/transport_texture_service.cc',
     'renderer/gpu/transport_texture_service.h',
     'renderer/gpu/webgraphicscontext3d_command_buffer_impl.cc',
     'renderer/gpu/webgraphicscontext3d_command_buffer_impl.h',
+    'renderer/idle_user_detector.cc',
+    'renderer/idle_user_detector.h',
     'renderer/indexed_db_dispatcher.cc',
     'renderer/indexed_db_dispatcher.h',
     'renderer/intents_dispatcher.cc',
     'renderer/intents_dispatcher.h',
     'renderer/java/java_bridge_channel.cc',
     'renderer/java/java_bridge_channel.h',
     'renderer/java/java_bridge_dispatcher.cc',
     'renderer/java/java_bridge_dispatcher.h',
     'renderer/load_progress_tracker.cc',
     'renderer/load_progress_tracker.h',
@@ skipping 194 matching lines @@
     }, {
       'sources!': [
         'renderer/java/java_bridge_channel.cc',
         'renderer/java/java_bridge_channel.h',
         'renderer/java/java_bridge_dispatcher.cc',
         'renderer/java/java_bridge_dispatcher.h',
       ],
     }],
   ],
 }