Move array_view.h to webrtc/api/

webrtc/rtc_base/buffer_unittest.cc

 /*
  *  Copyright 2004 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.
  */
 
 #include "webrtc/rtc_base/buffer.h"
 
-#include "webrtc/rtc_base/array_view.h"
+#include "webrtc/api/array_view.h"
 #include "webrtc/rtc_base/gunit.h"
 
 #include <type_traits>
 #include <utility>
 
 namespace rtc {
 
 namespace {
 
 // clang-format off
@@ skipping 404 matching lines @@
   BufferT<BloodStone*> buf2(4);
   for (size_t i = 0; i < buf2.size(); ++i) {
     buf2[i] = &buf[i];
   }
   static const char kObsidian[] = "obsidian";
   buf2[2]->stone = kObsidian;
   EXPECT_EQ(kObsidian, buf[2].stone);
 }
 
 }  // namespace rtc