Create module system for VisualBench

tools/VisualBench/VisualModule.h

Index: tools/VisualBench/VisualModule.h
diff --git a/tools/VisualBench/VisualModule.h b/tools/VisualBench/VisualModule.h
new file mode 100644
index 0000000000000000000000000000000000000000..ec4463d0a3a51922f00be5e58c23194a41461d01
--- /dev/null
+++ b/tools/VisualBench/VisualModule.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ */
+
+#ifndef VisualModule_DEFINED
+#define VisualModule_DEFINED
+
+#include "SkRefCnt.h"
+
+class SkCanvas;
+
+/*
+ * VisualModule is the base class for all of the various types of activities VisualBench supports.
+ *
+ * The common theme tying these all together is they need to display an image to the screen.  Later,
+ * on we some modules will also be interactive
+ */
+class VisualModule : public SkRefCnt {
+public:
+    virtual ~VisualModule() {}
+
+    virtual void draw(SkCanvas* canvas)=0;
+
+private:
+    typedef SkRefCnt INHERITED;
+};
+
+#endif