[libfuzzer] Blacklist skia_path_fuzzer and skia_pathop_fuzzer for Debug build.

testing/libfuzzer/fuzzers/BUILD.gn

 # Copyright 2015 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.
 
 # Individual libfuzzer tests that didn't find their home yet.
 
 import("//build/config/features.gni")
 import("//media/media_options.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 
@@ skipping 305 matching lines @@
 fuzzer_test("skia_path_fuzzer") {
   sources = [
     "skia_path_common.cc",
     "skia_path_common.h",
     "skia_path_fuzzer.cc",
   ]
   deps = [
     "//skia",
   ]
   libfuzzer_options = [ "max_len=256" ]
+  if (is_debug) {
+    # Disabled due to crashing on SkASSERT (crbug.com/642750, crbug.com/643275).
+    additional_configs = [ "//testing/libfuzzer:no_clusterfuzz" ]
+  }
 }
 
 fuzzer_test("skia_pathop_fuzzer") {
   sources = [
     "skia_path_common.cc",
     "skia_path_common.h",
     "skia_pathop_fuzzer.cc",
   ]
   deps = [
     "//skia",
   ]
   libfuzzer_options = [ "max_len=512" ]
+  if (is_debug) {
+    # Disabled due to crashing on SkASSERT (crbug.com/642750, crbug.com/643275).
+    additional_configs = [ "//testing/libfuzzer:no_clusterfuzz" ]
+  }
 }