Apps V2 in Pepper: introduce singleton resource ExtensionsCommon.

ppapi/proxy/extensions_common_resource.h

Index: ppapi/proxy/extensions_common_resource.h
diff --git a/ppapi/proxy/extensions_common_resource.h b/ppapi/proxy/extensions_common_resource.h
new file mode 100644
index 0000000000000000000000000000000000000000..83a2667ca9f8b4ee1edea06528f7e48876218c21
--- /dev/null
+++ b/ppapi/proxy/extensions_common_resource.h
@@ -0,0 +1,52 @@
+// Copyright (c) 2013 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 PPAPI_PROXY_EXTENSIONS_COMMON_RESOURCE_H_
+#define PPAPI_PROXY_EXTENSIONS_COMMON_RESOURCE_H_
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "ppapi/proxy/connection.h"
+#include "ppapi/proxy/plugin_resource.h"
+#include "ppapi/thunk/extensions_common_api.h"
+
+namespace base {
+class ListValue;
+}
+
+namespace ppapi {
+namespace proxy {
+
+class ResourceMessageReplyParams;
+
+class ExtensionsCommonResource : public PluginResource,
+                                 public thunk::ExtensionsCommon_API {
+ public:
+  ExtensionsCommonResource(Connection connection, PP_Instance instance);
+  virtual ~ExtensionsCommonResource();
+
+  // Resource overrides.
+  virtual thunk::ExtensionsCommon_API* AsExtensionsCommon_API() OVERRIDE;
+
+  // ExtensionsCommon_API implementation.
+  virtual int32_t Call(const std::string& request_name,
+                       const std::vector<PP_Var>& input_args,
+                       const std::vector<PP_Var*>& output_args,
+                       scoped_refptr<TrackedCallback> callback) OVERRIDE;
+  virtual void Post(const std::string& request_name,
+                    const std::vector<PP_Var>& args) OVERRIDE;
+
+ private:
+  void OnPluginMsgCallReply(const std::vector<PP_Var*>& output_args,
+                            scoped_refptr<TrackedCallback> callback,
+                            const ResourceMessageReplyParams& params,
+                            const base::ListValue& output);
+
+  DISALLOW_COPY_AND_ASSIGN(ExtensionsCommonResource);
+};
+
+}  // namespace proxy
+}  // namespace ppapi
+
+#endif  // PPAPI_PROXY_EXTENSIONS_COMMON_RESOURCE_H_