Add final part of IPC plumbing for FileSystem API

chrome/common/render_messages_params.h

Index: chrome/common/render_messages_params.h
diff --git a/chrome/common/render_messages_params.h b/chrome/common/render_messages_params.h
index abf2b028f96483dbfb02361b0f3672f421c31ddf..a3c5d205502115238b6f165b8fe03878e1e6fb55 100644
--- a/chrome/common/render_messages_params.h
+++ b/chrome/common/render_messages_params.h
@@ -839,6 +839,27 @@ struct ViewHostMsg_OpenFileSystemRequest_Params {
   int64 requested_size;
 };
 
+struct ViewMsg_FileSystem_DidReadDirectory_Params {
+  // The response should have this id.
+  int request_id;
+
+  // TODO(kinuko): replace this with file_util_proxy's entry structure
+  // once it's defined.
+  struct Entry {
+    // Name of the entry.
+    FilePath name;
+
+    // Indicates if the entry is directory or not.
+    bool is_directory;
+  };
+
+  // A vector of directory entries.
+  std::vector<Entry> entries;
+
+  // Indicates if there will be more entries.
+  bool has_more;
+};
+
 namespace IPC {
 
 class Message;
@@ -1092,6 +1113,22 @@ struct ParamTraits<ViewHostMsg_OpenFileSystemRequest_Params> {
   static void Log(const param_type& p, std::string* l);
 };
 
+template <>
+struct ParamTraits<ViewMsg_FileSystem_DidReadDirectory_Params> {
+  typedef ViewMsg_FileSystem_DidReadDirectory_Params param_type;
+  static void Write(Message* m, const param_type& p);
+  static bool Read(const Message* m, void** iter, param_type* p);
+  static void Log(const param_type& p, std::string* l);
+};
+
+template <>
+struct ParamTraits<ViewMsg_FileSystem_DidReadDirectory_Params::Entry> {
+  typedef ViewMsg_FileSystem_DidReadDirectory_Params::Entry param_type;
+  static void Write(Message* m, const param_type& p);
+  static bool Read(const Message* m, void** iter, param_type* p);
+  static void Log(const param_type& p, std::string* l);
+};
+
 }  // namespace IPC
 
 #endif  // CHROME_COMMON_RENDER_MESSAGES_PARAMS_H_