[NaCl SDK] Make the SDK examples buildable as a packaged app.

native_client_sdk/src/examples/hello_nacl_io/example.js

 // 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.
 
 function moduleDidLoad() {
   common.hideModule();
 }
 
 // Called by the common.js module.
 function domContentLoaded(name, tc, config, width, height) {
@@ skipping 60 matching lines @@
 function fopen(e) {
   var filename = document.getElementById('fopenFilename').value;
   var access = document.getElementById('fopenMode').value;
   nacl_module.postMessage(makeCall('fopen', filename, access));
 }
 
 function fopen_result(filename, filehandle) {
   filehandle_map[filehandle] = filename;
 
   addFilenameToSelectElements(filehandle, filename)
-  logMessage('File ' + filename + ' opened successfully.');
+  common.logMessage('File ' + filename + ' opened successfully.\n');
 }
 
 function fclose(e) {
   var filehandle = document.getElementById('fcloseHandle').value;
   nacl_module.postMessage(makeCall('fclose', filehandle));
 }
 
 function fclose_result(filehandle) {
   var filename = filehandle_map[filehandle];
   removeFilenameFromSelectElements(filehandle, filename);
-  logMessage('File ' + filename + ' closed successfully.');
+  common.logMessage('File ' + filename + ' closed successfully.\n');
 }
 
 function fread(e) {
   var filehandle = document.getElementById('freadHandle').value;
   var numBytes = document.getElementById('freadBytes').value;
   nacl_module.postMessage(makeCall('fread', filehandle, numBytes));
 }
 
 function fread_result(filehandle, data) {
   var filename = filehandle_map[filehandle];
-  logMessage('Read "' + data + '" from file ' + filename + '.');
+  common.logMessage('Read "' + data + '" from file ' + filename + '.\n');
 }
 
 function fwrite(e) {
   var filehandle = document.getElementById('fwriteHandle').value;
   var data = document.getElementById('fwriteData').value;
   nacl_module.postMessage(makeCall('fwrite', filehandle, data));
 }
 
 function fwrite_result(filehandle, bytes_written) {
   var filename = filehandle_map[filehandle];
-  logMessage('Wrote ' + bytes_written + ' bytes to file ' + filename + '.');
+  common.logMessage('Wrote ' + bytes_written + ' bytes to file ' + filename +
+      '.\n');
 }
 
 function fseek(e) {
   var filehandle = document.getElementById('fseekHandle').value;
   var offset = document.getElementById('fseekOffset').value;
   var whence = document.getElementById('fseekWhence').value;
   nacl_module.postMessage(makeCall('fseek', filehandle, offset, whence));
 }
 
 function fseek_result(filehandle, filepos) {
   var filename = filehandle_map[filehandle];
-  logMessage('Seeked to location ' + filepos + ' in file ' + filename + '.');
+  common.logMessage('Seeked to location ' + filepos + ' in file ' + filename +
+      '.\n');
 }
 
 /**
  * Return true when |s| starts with the string |prefix|.
  *
  * @param {string} s The string to search.
  * @param {string} prefix The prefix to search for in |s|.
  */
 function startsWith(s, prefix) {
   // indexOf would search the entire string, lastIndexOf(p, 0) only checks at
   // the first index. See: http://stackoverflow.com/a/4579228
   return s.lastIndexOf(prefix, 0) === 0;
 }
 
-function logMessage(msg) {
-  var logEl = document.getElementById('log');
-
-  // Perform some basic escaping.
-  msg = msg.replace(/&/g, '&')
-           .replace(/</g, '&lt;')
-           .replace(/>/g, '&gt;')
-           .replace(/"/g, '&quot;')
-           .replace(/'/g, '&apos;');
-
-  logEl.innerHTML += msg + '<br>';
-}
-
 function makeCall(func) {
   var message = func;
   for (var i = 1; i < arguments.length; ++i) {
     message += '\1' + arguments[i];
   }
 
   return message;
 }
 
 // Called by the common.js module.
 function handleMessage(message_event) {
   var msg = message_event.data;
   if (startsWith(msg, 'Error:')) {
-    logMessage(msg);
+    common.logMessage(msg + '\n');
   } else {
     // Result from a function call.
     var params = msg.split('\1');
     var func_name = params[0];
     var func_result_name = func_name + '_result';
     var result_func = window[func_result_name];
 
     if (!result_func) {
-      logMessage('Error: Bad message received from NaCl module.');
+      common.logMessage('Error: Bad message received from NaCl module.\n');
       return;
     }
 
     result_func.apply(null, params.slice(1));
   }
 }