Apps V2 in Pepper: introduce singleton resource ExtensionsCommon.

chrome/renderer/pepper/pepper_extensions_common_host.cc

+// 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.
+
+#include "chrome/renderer/pepper/pepper_extensions_common_host.h"
+
+#include "base/values.h"
+#include "content/public/renderer/renderer_ppapi_host.h"
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/host/dispatch_host_message.h"
+#include "ppapi/host/host_message_context.h"
+#include "ppapi/host/ppapi_host.h"
+#include "ppapi/proxy/ppapi_messages.h"
+
+namespace chrome {
+
+PepperExtensionsCommonHost::PepperExtensionsCommonHost(
+    content::RendererPpapiHost* host,
+    PP_Instance instance,
+    PP_Resource resource)
+    : ResourceHost(host->GetPpapiHost(), instance, resource),
+      renderer_ppapi_host_(host) {
+}
+
+PepperExtensionsCommonHost::~PepperExtensionsCommonHost() {
+}
+
+// static
+PepperExtensionsCommonHost* PepperExtensionsCommonHost::Create(
+    content::RendererPpapiHost* host,
+    PP_Instance instance,
+    PP_Resource resource) {
+  return new PepperExtensionsCommonHost(host, instance, resource);
+}
+
+int32_t PepperExtensionsCommonHost::OnResourceMessageReceived(
+    const IPC::Message& msg,
+    ppapi::host::HostMessageContext* context) {
+  IPC_BEGIN_MESSAGE_MAP(PepperExtensionsCommonHost, msg)
+    PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_ExtensionsCommon_Post,
+                                      OnPost)
+    PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_ExtensionsCommon_Call,
+                                      OnCall)
+  IPC_END_MESSAGE_MAP()
+  return PP_ERROR_FAILED;
+}
+
+int32_t PepperExtensionsCommonHost::OnPost(
+    ppapi::host::HostMessageContext* context,
+    const std::string& request_name,
+    const base::ListValue& args) {
+  // TODO(yzshen): Implement it.
+  return PP_ERROR_NOTSUPPORTED;
+}
+
+int32_t PepperExtensionsCommonHost::OnCall(
+    ppapi::host::HostMessageContext* context,
+    const std::string& request_name,
+    const base::ListValue& args) {
+  // TODO(yzshen): Implement it.
+  return PP_ERROR_NOTSUPPORTED;
+}
+
+}  // namespace chrome
+