Clean up some PDF code.

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 113 matching lines @@
 function PDFViewer(browserApi) {
   this.browserApi_ = browserApi;
   this.originalUrl_ = this.browserApi_.getStreamInfo().originalUrl;
   this.loadState_ = LoadState.LOADING;
   this.parentWindow_ = null;
   this.parentOrigin_ = null;
   this.isFormFieldFocused_ = false;
 
   this.delayedScriptingMessages_ = [];
 
-  this.isPrintPreview_ = this.originalUrl_.indexOf(
-                             'chrome://print') == 0;
+  this.isPrintPreview_ = this.originalUrl_.indexOf('chrome://print') == 0;
+
   // Parse open pdf parameters.
   this.paramsParser_ =
       new OpenPDFParamsParser(this.getNamedDestination_.bind(this));
   var toolbarEnabled =
       this.paramsParser_.getUiUrlParams(this.originalUrl_).toolbar &&
       !this.isPrintPreview_;
 
   // The sizer element is placed behind the plugin element to cause scrollbars
   // to be displayed in the window. It is sized according to the document size
   // of the pdf and zoom level.
@@ skipping 35 matching lines @@
   this.plugin_.type = 'application/x-google-chrome-pdf';
   this.plugin_.addEventListener('message', this.handlePluginMessage_.bind(this),
                                 false);
 
   // Handle scripting messages from outside the extension that wish to interact
   // with it. We also send a message indicating that extension has loaded and
   // is ready to receive messages.
   window.addEventListener('message', this.handleScriptingMessage.bind(this),
                           false);
 
-  this.plugin_.setAttribute('src',
-                            this.originalUrl_);
+  this.plugin_.setAttribute('src', this.originalUrl_);
   this.plugin_.setAttribute('stream-url',
                             this.browserApi_.getStreamInfo().streamUrl);
   var headers = '';
   for (var header in this.browserApi_.getStreamInfo().responseHeaders) {
     headers += header + ': ' +
         this.browserApi_.getStreamInfo().responseHeaders[header] + '\n';
   }
   this.plugin_.setAttribute('headers', headers);
 
   var backgroundColor = PDFViewer.DARK_BACKGROUND_COLOR;
@@ skipping 20 matching lines @@
     this.toolbar_.hidden = false;
     this.toolbar_.addEventListener('save', this.save_.bind(this));
     this.toolbar_.addEventListener('print', this.print_.bind(this));
     this.toolbar_.addEventListener('rotate-right',
         this.rotateClockwise_.bind(this));
     // Must attach to mouseup on the plugin element, since it eats mousedown
     // and click events.
     this.plugin_.addEventListener('mouseup',
         this.toolbar_.hideDropdowns.bind(this.toolbar_));
 
-    this.toolbar_.docTitle =
-        getFilenameFromURL(this.originalUrl_);
+    this.toolbar_.docTitle = getFilenameFromURL(this.originalUrl_);
   }
 
   document.body.addEventListener('change-page', function(e) {
     this.viewport_.goToPage(e.detail.page);
   }.bind(this));
 
   document.body.addEventListener('navigate', function(e) {
     var disposition =
         e.detail.newtab ? Navigator.WindowOpenDisposition.NEW_BACKGROUND_TAB :
                           Navigator.WindowOpenDisposition.CURRENT_TAB;
     this.navigator_.navigate(e.detail.uri, disposition);
   }.bind(this));
 
   this.toolbarManager_ =
       new ToolbarManager(window, this.toolbar_, this.zoomToolbar_);
 
   // Set up the ZoomManager.
   this.zoomManager_ = new ZoomManager(
       this.viewport_, this.browserApi_.setZoom.bind(this.browserApi_),
       this.browserApi_.getInitialZoom());
   this.browserApi_.addZoomEventListener(
       this.zoomManager_.onBrowserZoomChange.bind(this.zoomManager_));
 
   // Setup the keyboard event listener.
   document.addEventListener('keydown', this.handleKeyEvent_.bind(this));
   document.addEventListener('mousemove', this.handleMouseEvent_.bind(this));
   document.addEventListener('mouseout', this.handleMouseEvent_.bind(this));
 
   var isInTab = this.browserApi_.getStreamInfo().tabId != -1;
-  var isSourceFileUrl =
-      this.originalUrl_.indexOf('file://') == 0;
+  var isSourceFileUrl = this.originalUrl_.indexOf('file://') == 0;
   this.navigator_ = new Navigator(this.originalUrl_,
                                   this.viewport_, this.paramsParser_,
                                   onNavigateInCurrentTab.bind(undefined,
                                                               isInTab,
                                                               isSourceFileUrl),
                                   onNavigateInNewTab);
   this.viewportScroller_ =
       new ViewportScroller(this.viewport_, this.plugin_, window);
 
   // Request translated strings.
@@ skipping 371 matching lines @@
           position.y = message.data.y;
         this.viewport_.position = position;
         break;
       case 'cancelStreamUrl':
         chrome.mimeHandlerPrivate.abortStream();
         break;
       case 'metadata':
         if (message.data.title) {
           document.title = message.data.title;
         } else {
-          document.title =
-              getFilenameFromURL(this.originalUrl_);
+          document.title = getFilenameFromURL(this.originalUrl_);
         }
         this.bookmarks_ = message.data.bookmarks;
         if (this.toolbar_) {
           this.toolbar_.docTitle = document.title;
           this.toolbar_.bookmarks = this.bookmarks;
         }
         break;
       case 'setIsSelecting':
         this.viewportScroller_.setEnableScrolling(message.data.isSelecting);
         break;
       case 'getNamedDestinationReply':
-        this.paramsParser_.onNamedDestinationReceived(
-            message.data.pageNumber);
+        this.paramsParser_.onNamedDestinationReceived(message.data.pageNumber);
         break;
       case 'formFocusChange':
         this.isFormFieldFocused_ = message.data.focused;
         break;
     }
   },
 
   /**
    * @private
    * A callback that's called before the zoom changes. Notify the plugin to stop
@@ skipping 203 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_;
   }
 };