Make nanobench and dm be usable from Chromium build

dm/dm_main.cpp

Index: dm/dm_main.cpp
diff --git a/dm/dm_main.cpp b/dm/dm_main.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..ac8e0f3ce0db80c5cb153003028f461879dcaa72
--- /dev/null
+++ b/dm/dm_main.cpp
@@ -0,0 +1,16 @@
+/*
+ * Copyright 2014 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "CrashHandler.h"
+#include "SkCommandLineFlags.h"
+#include "dm.h"
+
+int main(int argc, char * const argv[]) {
+    SetupCrashHandler();
+    SkCommandLineFlags::Parse(argc, const_cast<char**>(argv));
+    return dm_main();
+}