Implement a fuzzer for skia paths.

skia/BUILD.gn

 # Copyright (c) 2013 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/features.gni")
 import("//build/config/ui.gni")
+import("//testing/libfuzzer/fuzzer_test.gni")
 import("//testing/test.gni")
 if (current_cpu == "arm") {
   import("//build/config/arm.gni")
 }
 if (current_cpu == "mipsel" || current_cpu == "mips64el") {
   import("//build/config/mips.gni")
 }
 
 skia_support_gpu = !is_ios
 skia_support_pdf = !is_ios && (enable_basic_printing || enable_print_preview)
 
 # When building Chrome for iOS with GYP, the target cpu is not known during
 # the invocation of gyp. This cause the iOS build to use non-optimised skia.
 # Replicate this with GN to avoid introducing regression as recommended by
 # the OWNERS of skia.
 
 declare_args() {
   skia_whitelist_serialized_typefaces = false
+
   # TODO(crbug.com/607933): Once GYP is no longer supported, port iOS to use
   # optimised skia.
   skia_build_no_opts = is_ios
 }
 
 # The list of Skia defines that are to be set for chromium.
 gypi_chromium_skia_defines =
     exec_script("//build/gypi_to_gn.py",
                 [
                   rebase_path("//skia/chromium_skia_defines.gypi"),
@@ skipping 716 matching lines @@
       "tools/filter_fuzz_stub/filter_fuzz_stub.cc",
     ]
 
     deps = [
       ":skia",
       "//base",
       "//base/test:test_support",
       "//build/config/sanitizers:deps",
     ]
   }
+
+  fuzzer_test("path_fuzzer") {

[mmoroz, 2016/06/02 10:05:22]

May be let's have more explicit name like "skia_path_fuzzer"?

[Martin Barbella, 2016/06/02 19:48:23]

Done.

+    sources = [
+      "tools/path_fuzzer/path_fuzzer.cc",
+    ]
+
+    deps = [
+      ":skia",
+    ]
+  }
 }