Add new fuzz binary.

fuzz/fuzz.cpp

+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "Fuzz.h"
+#include "SkCommandLineFlags.h"
+
+DEFINE_string2(match, m, "", "The usual match patterns, applied to name.");
+DEFINE_string2(bytes, b, "", "Path to file containing fuzzed bytes.");
+
+int main(int argc, char** argv) {
+    SkCommandLineFlags::Parse(argc, argv);
+    SkAutoTUnref<SkData> bytes;
+    if (!FLAGS_bytes.isEmpty()) {
+        bytes.reset(SkData::NewFromFileName(FLAGS_bytes[0]));
+    }
+
+    for (auto r = SkTRegistry<Fuzzable>::Head(); r; r = r->next()) {
+        auto fuzzable = r->factory();
+        if (!SkCommandLineFlags::ShouldSkip(FLAGS_match, fuzzable.name)) {
+            SkDebugf("Running %s...\n", fuzzable.name);
+            Fuzz fuzz(bytes);
+            fuzzable.fn(&fuzz);
+        }
+    }
+    return 0;
+}
+
+
+Fuzz::Fuzz(SkData* bytes) : fBytes(SkSafeRef(bytes)) {}
+
+// These methods are all TODO(kjlubick).
+uint32_t Fuzz::nextU() { return    0; }
+float    Fuzz::nextF() { return 0.0f; }
+uint32_t Fuzz::nextURange(uint32_t min, uint32_t max) { return min; }
+float    Fuzz::nextFRange(float    min, float    max) { return min; }
+