Reland of Move video_encoder.h and video_decoder.h to /api and create GN targets for them

webrtc/video/end_to_end_tests.cc

 /*
  *  Copyright (c) 2013 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 <algorithm>
 #include <list>
 #include <map>
 #include <memory>
 #include <sstream>
 #include <string>
 #include <vector>
 
+#include "webrtc/api/video_codecs/video_encoder.h"
 #include "webrtc/base/checks.h"
 #include "webrtc/base/event.h"
 #include "webrtc/base/file.h"
 #include "webrtc/base/optional.h"
 #include "webrtc/base/random.h"
 #include "webrtc/base/rate_limiter.h"
 #include "webrtc/call/call.h"
 #include "webrtc/common_video/include/frame_callback.h"
 #include "webrtc/logging/rtc_event_log/rtc_event_log.h"
 #include "webrtc/media/base/fakevideorenderer.h"
@@ skipping 19 matching lines @@
 #include "webrtc/test/frame_generator.h"
 #include "webrtc/test/frame_generator_capturer.h"
 #include "webrtc/test/gtest.h"
 #include "webrtc/test/gmock.h"
 #include "webrtc/test/null_transport.h"
 #include "webrtc/test/rtcp_packet_parser.h"
 #include "webrtc/test/rtp_rtcp_observer.h"
 #include "webrtc/test/testsupport/fileutils.h"
 #include "webrtc/test/testsupport/perf_test.h"
 #include "webrtc/video/transport_adapter.h"
-#include "webrtc/video_encoder.h"
 
 #if defined(MEMORY_SANITIZER)
 // Flaky under MemorySanitizer, see
 // https://bugs.chromium.org/p/webrtc/issues/detail?id=7419
 #define MAYBE_InitialProbing DISABLED_InitialProbing
 #else
 #define MAYBE_InitialProbing InitialProbing
 #endif
 
 namespace webrtc {
@@ skipping 4275 matching lines @@
     std::unique_ptr<VideoEncoder> encoder_;
     std::unique_ptr<VideoDecoder> decoder_;
     rtc::CriticalSection crit_;
     int recorded_frames_ GUARDED_BY(crit_);
   } test(this);
 
   RunBaseTest(&test);
 }
 
 }  // namespace webrtc