Add VP8 and H264 depacketizer fuzzers.

Also removes listing of targets in webrtc_fuzzers which is very prone to
not being up to date. They're not required for ClusterFuzz integration
or building locally. This also means that adding fuzzers won't require
approval outside the fuzzers directory.

BUG=webrtc:4771
R=kjellander@webrtc.org, stefan@webrtc.org

Review URL: https://codereview.webrtc.org/1518973003 .

Cr-Commit-Position: refs/heads/master@{#11067}
diff --git a/webrtc/BUILD.gn b/webrtc/BUILD.gn
index f11509c..b26d29f 100644
--- a/webrtc/BUILD.gn
+++ b/webrtc/BUILD.gn
@@ -281,15 +281,12 @@
 }
 
 if (use_libfuzzer || use_drfuzz) {
-  group("webrtc_fuzzers") {
+  # This target is only here for gn to discover fuzzer build targets under
+  # webrtc/test/fuzzers/.
+  group("webrtc_fuzzers_dummy") {
     testonly = true
     deps = [
-      "test/fuzzers:audio_decoder_ilbc_fuzzer",
-      "test/fuzzers:audio_decoder_isac_fuzzer",
-      "test/fuzzers:audio_decoder_isacfix_fuzzer",
-      "test/fuzzers:audio_decoder_opus_fuzzer",
-      "test/fuzzers:vp8_qp_parser_fuzzer",
-      "test/fuzzers:vp9_depacketizer_fuzzer",
+      "test/fuzzers:webrtc_fuzzer_main",
     ]
   }
 }
diff --git a/webrtc/test/fuzzers/BUILD.gn b/webrtc/test/fuzzers/BUILD.gn
index 798f99e..6a43548 100644
--- a/webrtc/test/fuzzers/BUILD.gn
+++ b/webrtc/test/fuzzers/BUILD.gn
@@ -21,6 +21,24 @@
   ]
 }
 
+webrtc_fuzzer_test("h264_depacketizer_fuzzer") {
+  sources = [
+    "h264_depacketizer_fuzzer.cc",
+  ]
+  deps = [
+    "../../modules/rtp_rtcp",
+  ]
+}
+
+webrtc_fuzzer_test("vp8_depacketizer_fuzzer") {
+  sources = [
+    "vp8_depacketizer_fuzzer.cc",
+  ]
+  deps = [
+    "../../modules/rtp_rtcp",
+  ]
+}
+
 webrtc_fuzzer_test("vp9_depacketizer_fuzzer") {
   sources = [
     "vp9_depacketizer_fuzzer.cc",
diff --git a/webrtc/test/fuzzers/h264_depacketizer_fuzzer.cc b/webrtc/test/fuzzers/h264_depacketizer_fuzzer.cc
new file mode 100644
index 0000000..ca73d94
--- /dev/null
+++ b/webrtc/test/fuzzers/h264_depacketizer_fuzzer.cc
@@ -0,0 +1,18 @@
+/*
+ *  Copyright (c) 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.
+ */
+#include "webrtc/modules/rtp_rtcp/source/rtp_format_h264.h"
+
+namespace webrtc {
+void FuzzOneInput(const uint8_t* data, size_t size) {
+  RtpDepacketizerH264 depacketizer;
+  RtpDepacketizer::ParsedPayload parsed_payload;
+  depacketizer.Parse(&parsed_payload, data, size);
+}
+}  // namespace webrtc
diff --git a/webrtc/test/fuzzers/vp8_depacketizer_fuzzer.cc b/webrtc/test/fuzzers/vp8_depacketizer_fuzzer.cc
new file mode 100644
index 0000000..d048372
--- /dev/null
+++ b/webrtc/test/fuzzers/vp8_depacketizer_fuzzer.cc
@@ -0,0 +1,18 @@
+/*
+ *  Copyright (c) 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.
+ */
+#include "webrtc/modules/rtp_rtcp/source/rtp_format_vp8.h"
+
+namespace webrtc {
+void FuzzOneInput(const uint8_t* data, size_t size) {
+  RtpDepacketizerVp8 depacketizer;
+  RtpDepacketizer::ParsedPayload parsed_payload;
+  depacketizer.Parse(&parsed_payload, data, size);
+}
+}  // namespace webrtc