Issue 189 - Implement API changes from #117, #153, #192 in Chrome

lib/filesystem/io.js

Index: lib/filesystem/io.js
===================================================================
--- a/lib/filesystem/io.js
+++ b/lib/filesystem/io.js
@@ -43,48 +43,33 @@ var IO = exports.IO =
 
   lineBreak: "\n",
 
   resolveFilePath: function(path)
   {
     return new FakeFile(path);
   },
 
-  readFromFile: function(file, decode, listener, callback, timeLineID)
+  readFromFile: function(file, listener, callback, timeLineID)
   {
     // Hack to allow importing old data
     if (typeof file == "string")
     {
       var Utils = require("utils").Utils;
       Utils.runAsync(function()
       {
         var lines = file.split(/[\r\n]+/);
         for (var i = 0; i < lines.length; i++)
           listener.process(lines[i]);
         listener.process(null);
         callback(null);
       }.bind(this));
       return;
     }
 
-    if ("spec" in file && /^defaults\b/.test(file.spec))
-    {
-      // Code attempts to read the default patterns.ini, we don't have that.
-      // Make sure to execute first-run actions instead.
-      var Utils = require("utils").Utils;
-      Utils.runAsync(function()
-      {
-        if (ext.storage.currentVersion)
-          seenDataCorruption = true;
-        delete ext.storage.currentVersion;
-        callback(null);
-      });
-      return;
-    }
-
     this._getFileEntry(file, false, function(fs, fileEntry)
     {
       fileEntry.file(function(file)
       {
         var reader = new FileReader();
         reader.onloadend = function()
         {
           if (reader.error)
@@ -98,17 +83,17 @@ var IO = exports.IO =
             callback(null);
           }
         };
         reader.readAsText(file);
       }, callback);
     }, callback);
   },
 
-  writeToFile: function(file, encode, data, callback, timeLineID)
+  writeToFile: function(file, data, callback, timeLineID)
   {
     this._getFileEntry(file, true, function(fs, fileEntry)
     {
       fileEntry.createWriter(function(writer)
       {
         var executeWriteOperation = function(op, nextOperation)
         {
           writer.onwriteend = function()