Break some fuzzer targets out so oss-fuzz can use them

FuzzImageFilterDeserialize is already being used in oss-fuzz
but the target lived there and not here.  This moves it here.

Then we can turn on:
 - FuzzPathDeserialize
 - FuzzTextBlobDeserialize


Bug: skia:
Change-Id: I7baee8386fb7aeebc43a68abfff9a670ba16f82c
Reviewed-on: https://skia-review.googlesource.com/105763
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/fuzz/oss_fuzz/FuzzTextBlobDeserialize.cpp b/fuzz/oss_fuzz/FuzzTextBlobDeserialize.cpp
new file mode 100644
index 0000000000..36c7057dbc
--- /dev/null
+++ b/fuzz/oss_fuzz/FuzzTextBlobDeserialize.cpp
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2018 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkCanvas.h"
+#include "SkPaint.h"
+#include "SkReadBuffer.h"
+#include "SkSurface.h"
+#include "SkTextBlob.h"
+
+void FuzzTextBlobDeserialize(SkReadBuffer& buf) {
+    auto tb = SkTextBlob::MakeFromBuffer(buf);
+    if (!buf.isValid()) {
+        return;
+    }
+
+    auto s = SkSurface::MakeRasterN32Premul(128, 128);
+    if (!s) {
+        // May return nullptr in memory-constrained fuzzing environments
+        return;
+    }
+    s->getCanvas()->drawTextBlob(tb, 200, 200, SkPaint());
+}
+
+#if defined(IS_FUZZING_WITH_LIBFUZZER)
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+    SkReadBuffer buf(data, size);
+    FuzzTextBlobDeserialize(buf);
+    return 0;
+}
+#endif