Remove the DownloadItem::TogglePause() interface.

chrome/browser/resources/downloads/downloads.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.
 
 // TODO(jhawkins): Use hidden instead of showInline* and display:none.
 
 /**
  * Sets the display style of a node.
  * @param {!Element} node The target element to show or hide.
  * @param {boolean} isShow Should the target element be visible.
@@ skipping 292 matching lines @@
     this.nodeControls_.appendChild(this.controlShow_);
   } else {
     this.controlShow_ = null;
   }
 
   this.controlRetry_ = document.createElement('a');
   this.controlRetry_.textContent = loadTimeData.getString('control_retry');
   this.nodeControls_.appendChild(this.controlRetry_);
 
   // Pause/Resume are a toggle.
-  this.controlPause_ = createLink(this.togglePause_.bind(this),
+  this.controlPause_ = createLink(this.pause_.bind(this),
       loadTimeData.getString('control_pause'));
   this.nodeControls_.appendChild(this.controlPause_);
 
-  this.controlResume_ = createLink(this.togglePause_.bind(this),
+  this.controlResume_ = createLink(this.resume_.bind(this),
       loadTimeData.getString('control_resume'));
   this.nodeControls_.appendChild(this.controlResume_);
 
   this.controlRemove_ = createLink(this.remove_.bind(this),
       loadTimeData.getString('control_removefromlist'));
   this.nodeControls_.appendChild(this.controlRemove_);
 
   this.controlCancel_ = createLink(this.cancel_.bind(this),
       loadTimeData.getString('control_cancel'));
   this.nodeControls_.appendChild(this.controlCancel_);
@@ skipping 276 matching lines @@
 Download.prototype.show_ = function() {
   chrome.send('show', [this.id_.toString()]);
   return false;
 };
 
 /**
  * Tells the backend to pause this download.
  * @return {boolean} Returns false to prevent the default action.
  * @private
  */
-Download.prototype.togglePause_ = function() {
-  chrome.send('togglepause', [this.id_.toString()]);
+Download.prototype.pause_ = function() {
+  chrome.send('pause', [this.id_.toString()]);
   return false;
 };
 
+/**
+ * Tells the backend to resume this download.
+ * @return {boolean} Returns false to prevent the default action.
+ * @private
+ */
+Download.prototype.resume_ = function() {
+  chrome.send('resume', [this.id_.toString()]);
+  return false;
+};
+
 /**
  * Tells the backend to remove this download from history and download shelf.
  * @return {boolean} Returns false to prevent the default action.
  * @private
  */
  Download.prototype.remove_ = function() {
   chrome.send('remove', [this.id_.toString()]);
   return false;
 };
 
@@ skipping 109 matching lines @@
     if (Date.now() - start > 50) {
       clearTimeout(resultsTimeout);
       resultsTimeout = setTimeout(tryDownloadUpdatedPeriodically, 5);
       break;
     }
   }
 }
 
 // Add handlers to HTML elements.
 window.addEventListener('DOMContentLoaded', load);