URLRequest fuzzer.

net/BUILD.gn

Index: net/BUILD.gn
diff --git a/net/BUILD.gn b/net/BUILD.gn
index 2debac60f10515c5423ff1e669290ef645c5c6f6..130562286a7ffe4e1bcdb76c73562f93f86b7102 100644
--- a/net/BUILD.gn
+++ b/net/BUILD.gn
@@ -1690,9 +1690,13 @@ source_set("net_fuzzer_test_support") {
   testonly = true
 
   sources = [
+    "base/fuzzed_data_provider.cc",
+    "base/fuzzed_data_provider.h",
     "base/fuzzer_test_support.cc",
     "socket/fuzzed_socket.cc",
     "socket/fuzzed_socket.h",
+    "socket/fuzzed_socket_factory.cc",
+    "socket/fuzzed_socket_factory.h",
   ]
   deps = [
     "//base",
@@ -1921,3 +1925,16 @@ fuzzer_test("net_socks5_client_socket_fuzzer") {
     "//net",
   ]
 }
+
+fuzzer_test("net_url_request_fuzzer") {
+  sources = [
+    "url_request/url_request_fuzzer.cc",
+  ]
+  deps = [
+    ":net_fuzzer_test_support",
+    ":test_support",
+    "//base",
+    "//net",
+  ]
+  dict = "data/http/http.dict"
+}