Add fuzzer for (A)PNG decoder

third_party/WebKit/Source/platform/BUILD.gn

Index: third_party/WebKit/Source/platform/BUILD.gn
diff --git a/third_party/WebKit/Source/platform/BUILD.gn b/third_party/WebKit/Source/platform/BUILD.gn
index d45fa60f61b735f57de7498d307ca52ad149ee75..2b5f6872a291e7dd3396462c2cfa7e8916d8eef9 100644
--- a/third_party/WebKit/Source/platform/BUILD.gn
+++ b/third_party/WebKit/Source/platform/BUILD.gn
@@ -2020,6 +2020,19 @@ fuzzer_test("web_icon_sizes_fuzzer") {
   dict = "//testing/libfuzzer/fuzzers/dicts/web_icon_sizes.dict"
 }
 
+fuzzer_test("blink_png_decoder_fuzzer") {
+  sources = [
+    "PngFuzzer.cpp",
+  ]
+  deps = [
+    ":blink_fuzzer_test_support",
+    ":platform",
+    "//third_party/libpng",
+  ]
+  dict = "//testing/libfuzzer/fuzzers/dicts/png.dict"
+  seed_corpus = "//third_party/WebKit/LayoutTests/images/resources/pngfuzz"

[mmoroz, 2017/01/04 08:37:54]

I like your idea to have multiple seed corpus directories, but we do not support
it at the moment. Though it would be easy to implement. I'll do it and update
this config file then (filed: crbug.com/678181)

+}
+
 # Fuzzer for blink::JSONParser.
 fuzzer_test("blink_json_parser_fuzzer") {
   sources = [