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

ppapi/cpp/dev/memory_dev.cc

Index: ppapi/cpp/dev/memory_dev.cc
diff --git a/ppapi/cpp/dev/memory_dev.cc b/ppapi/cpp/dev/memory_dev.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ca7c125f8dd9ef3b74c771ebeecb9e2be79c5fdd
--- /dev/null
+++ b/ppapi/cpp/dev/memory_dev.cc
@@ -0,0 +1,33 @@
+// 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.
+
+#include "ppapi/cpp/dev/memory_dev.h"
+
+#include "ppapi/c/dev/ppb_memory_dev.h"
+#include "ppapi/cpp/module.h"
+#include "ppapi/cpp/module_impl.h"
+
+namespace pp {
+
+namespace {
+
+template <> const char* interface_name<PPB_Memory_Dev>() {
+  return PPB_MEMORY_DEV_INTERFACE;
+}
+
+}  // namespace
+
+void* Memory_Dev::MemAlloc(uint32_t num_bytes) {
+  if (!has_interface<PPB_Memory_Dev>())
+    return NULL;
+  return get_interface<PPB_Memory_Dev>()->MemAlloc(num_bytes);
+}
+
+void Memory_Dev::MemFree(void* ptr) {
+  if (!has_interface<PPB_Memory_Dev>() || !ptr)
+    return;
+  get_interface<PPB_Memory_Dev>()->MemFree(ptr);
+}
+
+}  // namespace pp