Use mock temp file in profiler tests

Source/devtools/front_end/TempFile.js

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 164 matching lines @@
         function didFailToGetFile(error)
         {
             WebInspector.log("Failed to load temp file: " + error.message,
                               WebInspector.ConsoleMessage.MessageLevel.Error);
             callback(null);
         }
         this._fileEntry.file(didGetFile.bind(this), didFailToGetFile.bind(this));
     },
 
     /**
-     * @param {!function(?File)} callback
+     * @param {!WebInspector.OutputStream} outputStream
+     * @param {!WebInspector.OutputStreamDelegate} delegate
      */
-    getFile: function(callback)
+    writeToOutputSteam: function(outputStream, delegate)
     {
+        /**
+         * @param {!File} file
+         * @this {WebInspector.TempFile}
+         */
+        function didGetFile(file)
+        {
+            var reader = new WebInspector.ChunkedFileReader(file, 10*1000*1000, delegate);
+            reader.start(outputStream);
+        }
         function didFailToGetFile(error)
         {
             WebInspector.log("Failed to load temp file: " + error.message,
-                              WebInspector.ConsoleMessage.MessageLevel.Error);
-            callback(null);
+                             WebInspector.ConsoleMessage.MessageLevel.Error);
+            outputStream.close();
         }
-        this._fileEntry.file(callback, didFailToGetFile.bind(this));
+        this._fileEntry.file(didGetFile.bind(this), didFailToGetFile.bind(this));
     },
 
     remove: function()
     {
         if (this._fileEntry)
             this._fileEntry.remove(function() {});
     }
 }
 
 /**
@@ skipping 27 matching lines @@
     },
 
     /**
      * @param {!function(?WebInspector.TempFile)} callback
      */
     close: function(callback)
     {
         this._finishCallback = callback;
         if (this._isFinished)
             callback(this._tempFile);
+        else if (!this._isWriting && !this._chunks.length)
+            this._notifyFinished();
     },
 
     _didCreateTempFile: function(tempFile)
     {
         this._tempFile = tempFile;
         if (!tempFile) {
             this._chunks = null;
             this._notifyFinished();
             return;
         }
         if (this._chunks.length)
             this._writeNextChunk();
     },
 
     _writeNextChunk: function()
     {
         var chunkSize = 0;
         var endIndex = 0;
         for (; endIndex < this._chunks.length; endIndex++) {
             chunkSize += this._chunks[endIndex].length;
             if (chunkSize > 10 * 1000 * 1000)
                 break;
         }
         var chunk = this._chunks.slice(0, endIndex + 1).join("");
         this._chunks.splice(0, endIndex + 1);
+        this._isWriting = true;
         this._tempFile.write(chunk, this._didWriteChunk.bind(this));
-        this._isWriting = true;
     },
 
     _didWriteChunk: function(success)
     {
         this._isWriting = false;
         if (!success) {
             this._tempFile = null;
             this._chunks = null;
             this._notifyFinished();
             return;
@@ skipping 64 matching lines @@
 
 /**
  * @param {!function()} callback
  */
 WebInspector.TempFile._ensureTempStorageCleared = function(callback)
 {
     if (!WebInspector.TempFile._storageCleaner)
         WebInspector.TempFile._storageCleaner = new WebInspector.TempStorageCleaner();
     WebInspector.TempFile._storageCleaner.ensureStorageCleared(callback);
 }