[wasm] Pulling in new wasm function fuzzer, and wasm module corpus.

Pulling in a new v8 fuzzer.
Adding a download step for the wasm and wasm->asm.js module fuzzers.

BUG=None
TEST=None
R=kcc@chromium.org,ahaas@chromium.org,mmoroz@chromium.org

Review-Url: https://codereview.chromium.org/2284393003
Cr-Commit-Position: refs/heads/master@{#415340}

DEPS

@@ -1001,6 +1001,28 @@ hooks = [
                'src/build/android/download_doclava.py',
     ],
   },
+  {
+    "name": "wasm_fuzzer",
+    "pattern": ".",
+    "action": [ "download_from_google_storage",
+                "--no_resume",
+                "--no_auth",
+                "-u",
+                "--bucket", "v8-wasm-fuzzer",
+                "-s", "src/v8/test/fuzzer/wasm.tar.gz.sha1",
+    ],
+  },
+  {
+    "name": "wasm_asmjs_fuzzer",
+    "pattern": ".",
+    "action": [ "download_from_google_storage",
+                "--no_resume",
+                "--no_auth",
+                "-u",
+                "--bucket", "v8-wasm-asmjs-fuzzer",
+                "-s", "src/v8/test/fuzzer/wasm_asmjs.tar.gz.sha1",
+    ],
+  },
 ]
 
 # ANGLE manages DEPS that it also owns the build files for, such as dEQP.

testing/libfuzzer/fuzzers/BUILD.gn

@@ -240,12 +240,23 @@ fuzzer_test("v8_regexp_parser_fuzzer") {
   libfuzzer_options = [ "max_len=1024" ]
 }
 
+fuzzer_test("v8_wasm_code_fuzzer") {
+  sources = []
+  deps = [
+    "//v8:wasm_code_fuzzer",
+  ]
+  dict = "dicts/v8_wasm.dict"
+  seed_corpus = "//v8/test/fuzzer/wasm_code/"
+  libfuzzer_options = [ "max_len=500" ]
+}
+
 fuzzer_test("v8_wasm_fuzzer") {
   sources = []
   deps = [
     "//v8:wasm_fuzzer",
   ]
   dict = "dicts/v8_wasm.dict"
+  seed_corpus = "//v8/test/fuzzer/wasm/"
   libfuzzer_options = [ "max_len=500" ]
 }
 
@@ -254,6 +265,9 @@ fuzzer_test("v8_wasm_asmjs_fuzzer") {
   deps = [
     "//v8:wasm_asmjs_fuzzer",
   ]
+  dict = "dicts/v8_wasm.dict"
+  seed_corpus = "//v8/test/fuzzer/wasm_asmjs/"
+  libfuzzer_options = [ "max_len=500" ]
 }
 
 fuzzer_test("third_party_re2_fuzzer") {