Add fuzzer test for various media parsers

media/BUILD.gn

Index: media/BUILD.gn
diff --git a/media/BUILD.gn b/media/BUILD.gn
index 0c2674d08b7bcbf1ba6925094d8aa95b69b354a0..8c153cd5d839d969fafdd61a217be8a8ccabac2f 100644
--- a/media/BUILD.gn
+++ b/media/BUILD.gn
@@ -841,3 +841,30 @@ if (proprietary_codecs) {
     ]
   }
 }
+
+fuzzer_test("media_h264_parser_fuzzer") {
+  sources = [
+    "filters/h264_parser_fuzzertest.cc",
+  ]
+  deps = [
+    ":media",
+  ]
+}
+
+fuzzer_test("media_vp8_parser_fuzzer") {
+  sources = [
+    "filters/vp8_parser_fuzzertest.cc",
+  ]
+  deps = [
+    ":media",
+  ]
+}
+
+fuzzer_test("media_vp9_parser_fuzzer") {
+  sources = [
+    "filters/vp9_parser_fuzzertest.cc",
+  ]
+  deps = [
+    ":media",
+  ]
+}