Move media/capture/content/feedback_signal_accumulator{.h,_unittest.cc} to media/base

media/capture/capture.gyp

 # Copyright 2016 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.
 
 {
   'variables': {
     'chromium_code': 1,
     'capture_sources': [
       'capture_export.h',
       'content/animated_content_sampler.cc',
       'content/animated_content_sampler.h',
       'content/capture_resolution_chooser.cc',
       'content/capture_resolution_chooser.h',
-      'content/feedback_signal_accumulator.h',
       'content/screen_capture_device_core.cc',
       'content/screen_capture_device_core.h',
       'content/smooth_event_sampler.cc',
       'content/smooth_event_sampler.h',
       'content/thread_safe_capture_oracle.cc',
       'content/thread_safe_capture_oracle.h',
       'content/video_capture_oracle.cc',
       'content/video_capture_oracle.h',
       'device_monitor_mac.h',
       'device_monitor_mac.mm',
@@ skipping 49 matching lines @@
       'video/win/video_capture_device_factory_win.h',
       'video/win/video_capture_device_mf_win.cc',
       'video/win/video_capture_device_mf_win.h',
       'video/win/video_capture_device_win.cc',
       'video/win/video_capture_device_win.h'
     ],
 
     'capture_unittests_sources': [
       'content/animated_content_sampler_unittest.cc',
       'content/capture_resolution_chooser_unittest.cc',
-      'content/feedback_signal_accumulator_unittest.cc',
       'content/smooth_event_sampler_unittest.cc',
       'content/video_capture_oracle_unittest.cc',
       'system_message_window_win_unittest.cc',
       'video/fake_video_capture_device_unittest.cc',
       'video/mac/video_capture_device_factory_mac_unittest.mm',
       'video/video_capture_device_unittest.cc'
     ],
 
     # The following files lack appropriate platform suffixes.
     'conditions': [
@@ skipping 206 matching lines @@
               ],
             },
           ],
         }],
       ],
 
     }],
 
   ],
 }