Add IPC plumbing code for FileSystem API's openFileSystem

chrome/common/render_messages.h

 // Copyright (c) 2010 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_COMMON_RENDER_MESSAGES_H_
 #define CHROME_COMMON_RENDER_MESSAGES_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 871 matching lines @@
   // Unique request id to match requests and responses.
   int request_id;
 
   // True if request has a callback specified.
   bool has_callback;
 
   // True if request is executed in response to an explicit user gesture.
   bool user_gesture;
 };
 
+struct ViewHostMsg_OpenFileSystemRequest_Params {
+  // The routing ID of the view initiating the request.
+  int routing_id;
+
+  // The response should have this id.
+  int request_id;
+
+  // The origin doing the initiating.
+  GURL origin_url;
+
+  // The requested FileSystem type.
+  WebKit::WebFileSystem::Type type;
+
+  // Indicates how much storage space (in bytes) the caller expects to need.
+  int64 requested_size;
+};
+
 namespace IPC {
 
 template <>
 struct ParamTraits<ResourceType::Type> {
   typedef ResourceType::Type param_type;
   static void Write(Message* m, const param_type& p) {
     m->WriteInt(p);
   }
   static bool Read(const Message* m, void** iter, param_type* p) {
     int type;
@@ skipping 1862 matching lines @@
     l->append(", ");
     LogParam(p.request_id, l);
     l->append(", ");
     LogParam(p.has_callback, l);
     l->append(", ");
     LogParam(p.user_gesture, l);
     l->append(")");
   }
 };
 
+template <>
+struct ParamTraits<ViewHostMsg_OpenFileSystemRequest_Params> {
+  typedef ViewHostMsg_OpenFileSystemRequest_Params param_type;
+  static void Write(Message* m, const param_type& p) {
+    WriteParam(m, p.routing_id);
+    WriteParam(m, p.request_id);
+    WriteParam(m, p.origin_url);
+    WriteParam(m, p.type);
+    WriteParam(m, p.requested_size);
+  }
+  static bool Read(const Message* m, void** iter, param_type* p) {
+    return
+        ReadParam(m, iter, &p->routing_id) &&
+        ReadParam(m, iter, &p->request_id) &&
+        ReadParam(m, iter, &p->origin_url) &&
+        ReadParam(m, iter, &p->type) &&
+        ReadParam(m, iter, &p->requested_size);
+  }
+  static void Log(const param_type& p, std::string* l) {
+    l->append("(");
+    LogParam(p.routing_id, l);
+    l->append(", ");
+    LogParam(p.request_id, l);
+    l->append(", ");
+    LogParam(p.origin_url, l);
+    l->append(", ");
+    LogParam(p.type, l);
+    l->append(", ");
+    LogParam(p.requested_size, l);
+    l->append(")");
+  }
+};
+
 }  // namespace IPC
 
 #define MESSAGES_INTERNAL_FILE "chrome/common/render_messages_internal.h"
 #include "ipc/ipc_message_macros.h"
 
 #endif  // CHROME_COMMON_RENDER_MESSAGES_H_