Add a fuzzer for V8ScriptValueDeserializer.

third_party/WebKit/Source/bindings/core/v8/BUILD.gn

Index: third_party/WebKit/Source/bindings/core/v8/BUILD.gn
diff --git a/third_party/WebKit/Source/bindings/core/v8/BUILD.gn b/third_party/WebKit/Source/bindings/core/v8/BUILD.gn
index 488ea4ad0f41de52ccbec31d9a7cf470456851e8..76cedceefdfc7ace986be25e9a19146d351d33ba 100644
--- a/third_party/WebKit/Source/bindings/core/v8/BUILD.gn
+++ b/third_party/WebKit/Source/bindings/core/v8/BUILD.gn
@@ -2,6 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//testing/libfuzzer/fuzzer_test.gni")
 import("//third_party/WebKit/Source/bindings/bindings.gni")
 import("//third_party/WebKit/Source/bindings/scripts/scripts.gni")
 import("//third_party/WebKit/Source/core/core.gni")
@@ -303,3 +304,14 @@ source_set("testing") {
     "//v8",
   ]
 }
+
+fuzzer_test("v8_serialized_script_value_fuzzer") {
+  sources = [
+    "serialization/SerializedScriptValueFuzzer.cpp",
+  ]
+  seed_corpus = "serialization/fuzz_corpus"
+  deps = [
+    "//third_party/WebKit/Source/core",
+    "//third_party/WebKit/Source/platform:blink_fuzzer_test_support",
+  ]
+}