Add UMA reporting to CdmPromise.

media/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/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/ui.gni")
 import("//build/config/linux/pkg_config.gni")
 import("//media/media_options.gni")
 
@@ skipping 635 matching lines @@
     "base/audio_hash_unittest.cc",
     "base/audio_pull_fifo_unittest.cc",
     "base/audio_renderer_mixer_input_unittest.cc",
     "base/audio_renderer_mixer_unittest.cc",
     "base/audio_splicer_unittest.cc",
     "base/audio_timestamp_helper_unittest.cc",
     "base/bind_to_current_loop_unittest.cc",
     "base/bit_reader_unittest.cc",
     "base/callback_holder.h",
     "base/callback_holder_unittest.cc",
+    "base/cdm_promise_unittest.cc",
     "base/channel_mixer_unittest.cc",
     "base/data_buffer_unittest.cc",
     "base/decoder_buffer_queue_unittest.cc",
     "base/decoder_buffer_unittest.cc",
     "base/djb2_unittest.cc",
     "base/gmock_callback_support_unittest.cc",
     "base/multi_channel_resampler_unittest.cc",
     "base/pipeline_unittest.cc",
     "base/ranges_unittest.cc",
     "base/run_all_unittests.cc",
@@ skipping 492 matching lines @@
       "base/android/java/src/org/chromium/media/ImageFormat.template",
     ]
     inputs = [
       "video/capture/android/imageformat_list.h"
     ]
     package_name = "org/chromium/media"
   }
 
   # TODO(dalecurtis): Finish media_unittests_apk and media_perftests_apk.
 }