Adds UMA histograms for desktop capture device.

content/content_browser.gypi

 # Copyright (c) 2012 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': [
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../google_apis/google_apis.gyp:google_apis',
     '../net/net.gyp:net',
@@ skipping 1465 matching lines @@
       'dependencies': [
         '../third_party/libjingle/libjingle.gyp:libjingle_webrtc',
       ],
     }],
     ['enable_webrtc==1 and (OS=="linux" or OS=="mac" or OS=="win")', {
       'sources': [
         'browser/media/capture/desktop_capture_device.cc',
         'browser/media/capture/desktop_capture_device.h',
         'browser/media/capture/desktop_capture_device_aura.cc',
         'browser/media/capture/desktop_capture_device_aura.h',
+        'browser/media/capture/desktop_capture_device_uma_types.cc',
+        'browser/media/capture/desktop_capture_device_uma_types.h',
       ],
       'dependencies': [
         '../third_party/webrtc/modules/modules.gyp:desktop_capture',
       ],
       'defines': [
         'ENABLE_SCREEN_CAPTURE=1',
       ],
     }],
     ['OS=="win"', {
       'dependencies': [
@@ skipping 218 matching lines @@
         '../build/linux/system.gyp:dbus',
         '../dbus/dbus.gyp:dbus',
       ],
     }, {  # OS != "linux" or use_dbus==0
       'sources!': [
         'browser/geolocation/wifi_data_provider_linux.cc',
       ],
     }],
   ],
 }