PDF: Use chrome.resourcesPrivate instead of Pepper to display translated strings

chrome/browser/resources/pdf/pdf.js

 // Copyright 2013 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.
 
 'use strict';
 
 /**
  * @return {number} Width of a scrollbar in pixels
  */
 function getScrollbarWidth() {
@@ skipping 237 matching lines @@
   document.addEventListener('mousemove', this.handleMouseEvent_.bind(this));
 
   // Parse open pdf parameters.
   this.paramsParser_ =
       new OpenPDFParamsParser(this.getNamedDestination_.bind(this));
   this.navigator_ = new Navigator(this.browserApi_.getStreamInfo().originalUrl,
                                   this.viewport_, this.paramsParser_,
                                   onNavigateInCurrentTab, onNavigateInNewTab);
   this.viewportScroller_ =
       new ViewportScroller(this.viewport_, this.plugin_, window);
+
+  // Request translated strings.
+  chrome.resourcesPrivate.getStrings('pdf', this.handleStrings_.bind(this));
 }
 
 PDFViewer.prototype = {
   /**
    * @private
    * Handle key events. These may come from the user directly or via the
    * scripting API.
    * @param {KeyboardEvent} e the event to handle.
    */
   handleKeyEvent_: function(e) {
@@ skipping 264 matching lines @@
       while (this.delayedScriptingMessages_.length > 0)
         this.handleScriptingMessage(this.delayedScriptingMessages_.shift());
 
       if (this.isMaterial_)
         this.toolbarManager_.hideToolbarsAfterTimeout();
     }
   },
 
   /**
    * @private
+   * Load a dictionary of translated strings into the UI. Used as a callback for
+   * chrome.resourcesPrivate.
+   * @param {Object} strings Dictionary of translated strings
+   */
+  handleStrings_: function(strings) {
+    this.passwordScreen_.text = strings.passwordPrompt;
+    if (!this.isMaterial_) {
+      this.progressBar_.text = strings.pageLoading;
+      if (!this.isPrintPreview_)
+        this.progressBar_.style.visibility = 'visible';
+    }
+    this.errorScreen_.text = strings.pageLoadFailed;
+  },
+
+  /**
+   * @private
    * An event handler for handling password-submitted events. These are fired
    * when an event is entered into the password screen.
    * @param {Object} event a password-submitted event.
    */
   onPasswordSubmitted_: function(event) {
     this.plugin_.postMessage({
       type: 'getPasswordComplete',
       password: event.detail.password
     });
   },
@@ skipping 59 matching lines @@
           this.navigator_.navigate(message.data.url, message.data.newTab);
         break;
       case 'setScrollPosition':
         var position = this.viewport_.position;
         if (message.data.x !== undefined)
           position.x = message.data.x;
         if (message.data.y !== undefined)
           position.y = message.data.y;
         this.viewport_.position = position;
         break;
-      case 'setTranslatedStrings':
-        this.passwordScreen_.text = message.data.getPasswordString;
-        if (!this.isMaterial_) {
-          this.progressBar_.text = message.data.loadingString;
-          if (!this.isPrintPreview_)
-            this.progressBar_.style.visibility = 'visible';
-        }
-        this.errorScreen_.text = message.data.loadFailedString;
-        break;
       case 'cancelStreamUrl':
         chrome.mimeHandlerPrivate.abortStream();
         break;
       case 'metadata':
         if (message.data.title) {
           document.title = message.data.title;
         } else {
           document.title =
               getFilenameFromURL(this.browserApi_.getStreamInfo().originalUrl);
         }
@@ skipping 232 matching lines @@
    * Each bookmark is an Object containing a:
    * - title
    * - page (optional)
    * - array of children (themselves bookmarks)
    * @type {Array} the top-level bookmarks of the PDF.
    */
   get bookmarks() {
     return this.bookmarks_;
   }
 };