Fix empty href for favicon link element causing page to be fetched twice.

third_party/WebKit/Source/core/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/chromecast_build.gni")
 import("//build/toolchain/toolchain.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 import("//third_party/WebKit/Source/bindings/bindings.gni")
@@ skipping 1127 matching lines @@
     "html/AutoplayUmaHelperTest.cpp",
     "html/FormDataTest.cpp",
     "html/HTMLDimensionTest.cpp",
     "html/HTMLEmbedElementTest.cpp",
     "html/HTMLFormControlElementTest.cpp",
     "html/HTMLIFrameElementPermissionsTest.cpp",
     "html/HTMLIFrameElementTest.cpp",
     "html/HTMLImageElementTest.cpp",
     "html/HTMLInputElementTest.cpp",
     "html/HTMLLinkElementSizesAttributeTest.cpp",
+    "html/HTMLLinkElementTest.cpp",
     "html/HTMLMediaElementTest.cpp",
     "html/HTMLOutputElementTest.cpp",
     "html/HTMLSelectElementTest.cpp",
     "html/HTMLTableRowElementTest.cpp",
     "html/HTMLTextAreaElementTest.cpp",
     "html/HTMLVideoElementTest.cpp",
     "html/ImageDocumentTest.cpp",
     "html/LinkRelAttributeTest.cpp",
     "html/TextControlElementTest.cpp",
     "html/TimeRangesTest.cpp",
@@ skipping 172 matching lines @@
   sources = [
     "frame/csp/ContentSecurityPolicyFuzzer.cpp",
   ]
   deps = [
     ":core",
     "//third_party/WebKit/Source/platform:blink_fuzzer_test_support",
   ]
   dict = "//testing/libfuzzer/fuzzers/dicts/content_security_policy.dict"
   seed_corpus = "//testing/libfuzzer/fuzzers/content_security_policy_corpus"
 }