Move array_view.h to webrtc/api/

webrtc/rtc_base/optional.h

 /*
  *  Copyright 2015 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.
  */
 
 #ifndef WEBRTC_RTC_BASE_OPTIONAL_H_
 #define WEBRTC_RTC_BASE_OPTIONAL_H_
 
 #include <algorithm>
 #include <memory>
 #include <utility>
 
 #ifdef UNIT_TEST
 #include <iomanip>
 #include <ostream>
 #endif  // UNIT_TEST
 
-#include "webrtc/rtc_base/array_view.h"
+#include "webrtc/api/array_view.h"
 #include "webrtc/rtc_base/checks.h"
 #include "webrtc/rtc_base/sanitizer.h"
 
 namespace rtc {
 
 namespace optional_internal {
 
 #if RTC_HAS_ASAN
 
 // This is a non-inlined function. The optimizer can't see inside it.  It
@@ skipping 366 matching lines @@
   } else {
     *os << "<empty optional>";
   }
 }
 
 #endif  // UNIT_TEST
 
 }  // namespace rtc
 
 #endif  // WEBRTC_RTC_BASE_OPTIONAL_H_