Add PPB_Memory_Dev. This is the first of a few CLs needed to pull MemAlloc and

webkit/plugins/ppapi/ppb_memory_impl.h

Index: webkit/plugins/ppapi/ppb_memory_impl.h
diff --git a/webkit/plugins/ppapi/ppb_memory_impl.h b/webkit/plugins/ppapi/ppb_memory_impl.h
new file mode 100644
index 0000000000000000000000000000000000000000..f07c055719c8582f07c0b8491f636e07fa542eed
--- /dev/null
+++ b/webkit/plugins/ppapi/ppb_memory_impl.h
@@ -0,0 +1,23 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef WEBKIT_PLUGINS_PPAPI_PPB_MEMORY_IMPL_H_
+#define WEBKIT_PLUGINS_PPAPI_PPB_MEMORY_IMPL_H_
+
+struct PPB_Memory_Dev;
+
+namespace webkit {
+namespace ppapi {
+
+class PPB_Memory_Impl {
+ public:
+  // Returns a pointer to the interface implementing PPB_Memory_Dev that is
+  // exposed to the plugin.
+  static const PPB_Memory_Dev* GetInterface();
+};
+
+}  // namespace ppapi
+}  // namespace webkit
+
+#endif  // WEBKIT_PLUGINS_PPAPI_PPB_MEMORY_IMPL_H_