Move blink_html_tokenizer_fuzzer next to the other fuzzer targets.

As part of bug 800764 I'm working on getting rid of BUILD.gn files
in core sub-directories, and merge (almost) everything into one large
core target. This was the only fuzzer whose target wasn't defined in
core/BUILD.gn, so I moved it there.

Bug: 800764

Change-Id: I468dc316795a2cc4e17fe424e35c7fea8da1de21
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2467856Reviewed-by: Mason Freed <masonfreed@chromium.org>
Commit-Queue: Morten Stenshorne <mstensho@chromium.org>
Cr-Commit-Position: refs/heads/master@{#816627}

third_party/blink/renderer/core/BUILD.gn

@@ -1634,6 +1634,14 @@ proto_library("css_proto") {
   sources = [ "css/parser/css.proto" ]
 }
 
+fuzzer_test("blink_html_tokenizer_fuzzer") {
+  sources = [ "html/parser/html_tokenizer_fuzzer.cc" ]
+  deps = [
+    ":core",
+    "//third_party/blink/renderer/platform:blink_fuzzer_test_support",
+  ]
+}
+
 # Fuzzers for blink::FeaturePolicy.
 fuzzer_test("feature_policy_fuzzer") {
   sources = [ "feature_policy/feature_policy_fuzzer.cc" ]

third_party/blink/renderer/core/html/parser/BUILD.gn

@@ -2,7 +2,6 @@
 # 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/blink/renderer/core/core.gni")
 
 blink_core_sources("parser") {
@@ -88,11 +87,3 @@ blink_core_sources("parser") {
     configs += [ "//build/config/compiler:optimize_max" ]
   }
 }
-
-fuzzer_test("blink_html_tokenizer_fuzzer") {
-  sources = [ "html_tokenizer_fuzzer.cc" ]
-  deps = [
-    "../../:core",
-    "../../../platform:blink_fuzzer_test_support",
-  ]
-}