Move array_view.h to webrtc/api/

webrtc/modules/audio_processing/test/conversational_speech/BUILD.gn

 # Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import("../../../../../webrtc/webrtc.gni")
 
@@ skipping 27 matching lines @@
     "simulator.h",
     "timing.cc",
     "timing.h",
     "wavreader_abstract_factory.h",
     "wavreader_factory.cc",
     "wavreader_factory.h",
     "wavreader_interface.h",
   ]
   deps = [
     "../../../..:webrtc_common",
+    "../../../../api:array_view",
     "../../../../common_audio",
     "../../../../rtc_base:rtc_base_approved",
   ]
   visibility = [ ":*" ]  # Only targets in this file can depend on this.
 }
 
 rtc_source_set("unittest") {
   testonly = true
   sources = [
     "generator_unittest.cc",
     "mock_wavreader.cc",
     "mock_wavreader.h",
     "mock_wavreader_factory.cc",
     "mock_wavreader_factory.h",
   ]
   deps = [
     ":lib",
     "../../../..:webrtc_common",
+    "../../../../api:array_view",
     "../../../../common_audio",
     "../../../../rtc_base:rtc_base_approved",
     "../../../../test:test_support",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }