Log when PreventDefaulting event forced uncancellable.

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 1067 matching lines @@
     "dom/custom/CustomElementRegistryTest.cpp",
     "dom/custom/CustomElementTest.cpp",
     "dom/custom/CustomElementTestHelpers.cpp",
     "dom/custom/CustomElementTestHelpers.h",
     "dom/custom/CustomElementUpgradeSorterTest.cpp",
     "dom/shadow/FlatTreeTraversalTest.cpp",
     "dom/shadow/SlotScopedTraversalTest.cpp",
     "events/EventPathTest.cpp",
     "events/EventTargetTest.cpp",
     "events/PointerEventFactoryTest.cpp",
+    "events/TouchEventTest.cpp",
     "fileapi/FileListTest.cpp",
     "fileapi/FileTest.cpp",
     "frame/FeaturePolicyInFrameTest.cpp",
     "frame/FrameViewTest.cpp",
     "frame/HistoryTest.cpp",
     "frame/ImageBitmapTest.cpp",
     "frame/LocalFrameTest.cpp",
     "frame/OriginsUsingFeaturesTest.cpp",
     "frame/PerformanceMonitorTest.cpp",
     "frame/RootFrameViewportTest.cpp",
@@ skipping 208 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"
 }