Add browser resource host for Apps v2 APIs in Pepper.

chrome/browser/renderer_host/pepper/pepper_extensions_common_message_filter.h

+// 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 CHROME_BROWSER_RENDERER_HOST_PEPPER_PEPPER_EXTENSIONS_COMMON_MESSAGE_FILTER_H_
+#define CHROME_BROWSER_RENDERER_HOST_PEPPER_PEPPER_EXTENSIONS_COMMON_MESSAGE_FILTER_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/files/file_path.h"
+#include "googleurl/src/gurl.h"
+#include "ppapi/c/pp_instance.h"
+#include "ppapi/host/resource_message_filter.h"
+
+namespace base {
+class ListValue;
+}
+
+namespace content {
+class BrowserPpapiHost;
+}
+
+namespace ppapi {
+namespace host {
+struct HostMessageContext;
+}
+}
+
+namespace chrome {
+
+class PepperExtensionsCommonMessageFilter
+    : public ppapi::host::ResourceMessageFilter {
+ public:
+  static PepperExtensionsCommonMessageFilter* Create(
+      content::BrowserPpapiHost* host,
+      PP_Instance instance);
+
+ protected:
+  PepperExtensionsCommonMessageFilter(int render_process_id,
+                                      int render_view_id,
+                                      const base::FilePath& profile_directory,
+                                      const GURL& document_url);
+  virtual ~PepperExtensionsCommonMessageFilter();
+
+  // ppapi::host::ResourceMessageFilter overrides.
+  virtual scoped_refptr<base::TaskRunner> OverrideTaskRunnerForMessage(
+      const IPC::Message& msg) OVERRIDE;
+  virtual int32_t OnResourceMessageReceived(
+      const IPC::Message& msg,
+      ppapi::host::HostMessageContext* context) OVERRIDE;
+
+ private:
+  int32_t OnPost(ppapi::host::HostMessageContext* context,
+                 const std::string& request_name,
+                 base::ListValue& args);
+
+  int32_t OnCall(ppapi::host::HostMessageContext* context,
+                 const std::string& request_name,
+                 base::ListValue& args);
+
+  // All the members are initialized on the IO thread when the object is
+  // constructed, and accessed only on the UI thread afterwards.
+  int render_process_id_;
+  int render_view_id_;
+  base::FilePath profile_directory_;
+  GURL document_url_;
+
+  DISALLOW_COPY_AND_ASSIGN(PepperExtensionsCommonMessageFilter);
+};
+
+}  // namespace chrome
+
+#endif  // CHROME_BROWSER_RENDERER_HOST_PEPPER_PEPPER_EXTENSIONS_COMMON_MESSAGE_FILTER_H_