Add an interface for Flash to clear its data.

ppapi/proxy/ppapi_messages.h

 // Copyright (c) 2012 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.
 
 // Multiply-included message header, no traditional include guard.
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
@@ skipping 225 matching lines @@
 // PPP_NetworkState_Dev.
 IPC_MESSAGE_CONTROL1(PpapiMsg_SetNetworkState,
                      bool /* online */)
 
 // Sent in both directions to see if the other side supports the given
 // interface.
 IPC_SYNC_MESSAGE_CONTROL1_1(PpapiMsg_SupportsInterface,
                             std::string /* interface_name */,
                             bool /* result */)
 
+// Instructs the plugin to clear data for the given site & time. The plugin
+// process will respond with PpapiHostMsg_ClearSiteDataResult.
+IPC_MESSAGE_CONTROL3(PpapiMsg_ClearSiteData,
+                     std::string /* site */,
+                     uint64 /* flags */,
+                     uint64 /* max_age */)
+IPC_MESSAGE_CONTROL1(PpapiHostMsg_ClearSiteDataResult,
+                     bool /* success */)
+
 // Broker Process.
-
 IPC_SYNC_MESSAGE_CONTROL2_1(PpapiMsg_ConnectToPlugin,
                             PP_Instance /* instance */,
                             IPC::PlatformFileForTransit /* handle */,
                             int32_t /* result */)
 
 // PPB_Audio.
 
 // Notifies the result of the audio stream create call. This is called in
 // both error cases and in the normal success case. These cases are
 // differentiated by the result code, which is one of the standard PPAPI
@@ skipping 1055 matching lines @@
 IPC_MESSAGE_CONTROL2(PpapiHostMsg_PPBTCPServerSocket_Accept,
                      int32 /* tcp_client_socket_routing_id */,
                      uint32 /* server_socket_id */)
 IPC_MESSAGE_CONTROL1(PpapiHostMsg_PPBTCPServerSocket_Destroy,
                      uint32 /* socket_id */)
 
 // PPB_Font.
 IPC_SYNC_MESSAGE_CONTROL0_1(PpapiHostMsg_PPBFont_GetFontFamilies,
                             std::string /* result */)
 #endif  // !defined(OS_NACL)