Change the OOP PDF plugin to use BrowserPlugin mime type handling.

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';
 
-<include src="../../../../ui/webui/resources/js/util.js">
-<include src="open_pdf_params_parser.js">
-<include src="pdf_scripting_api.js">
-<include src="viewport.js">
-
 /**
  * @return {number} Width of a scrollbar in pixels
  */
 function getScrollbarWidth() {
   var div = document.createElement('div');
   div.style.visibility = 'hidden';
   div.style.overflow = 'scroll';
   div.style.width = '50px';
   div.style.height = '50px';
   div.style.position = 'absolute';
   document.body.appendChild(div);
   var result = div.offsetWidth - div.clientWidth;
   div.parentNode.removeChild(div);
   return result;
 }
 
 /**
  * The minimum number of pixels to offset the toolbar by from the bottom and
  * right side of the screen.
  */
 PDFViewer.MIN_TOOLBAR_OFFSET = 15;
 
 /**
  * Creates a new PDFViewer. There should only be one of these objects per
  * document.
+ * @param {Object} streamDetails The stream object which points to the data
+ *     contained in the PDF.
  */
-function PDFViewer() {
+function PDFViewer(streamDetails) {
+  this.streamDetails = streamDetails;
   this.loaded = false;
 
   // 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.
   this.sizer_ = $('sizer');
   this.toolbar_ = $('toolbar');
   this.pageIndicator_ = $('page-indicator');
   this.progressBar_ = $('progress-bar');
   this.passwordScreen_ = $('password-screen');
@@ skipping 21 matching lines @@
   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.sendScriptingMessage_({type: 'readyToReceive'});
 
-  // If the viewer is started from a MIME type request, there will be a
-  // background page and stream details object with the details of the request.
-  // Otherwise, we take the query string of the URL to indicate the URL of the
-  // PDF to load. This is used for print preview in particular.
-  if (chrome.extension.getBackgroundPage &&
-      chrome.extension.getBackgroundPage()) {
-    this.streamDetails =
-        chrome.extension.getBackgroundPage().popStreamDetails();
-  }
-
-  if (!this.streamDetails) {
-    // The URL of this page will be of the form
-    // "chrome-extension://<extension id>?<pdf url>". We pull out the <pdf url>
-    // part here.
-    var url = window.location.search.substring(1);
-    this.streamDetails = {
-      streamUrl: url,
-      originalUrl: url,
-      responseHeaders: ''
-    };
-  }
-
   this.plugin_.setAttribute('src', this.streamDetails.originalUrl);
   this.plugin_.setAttribute('stream-url', this.streamDetails.streamUrl);
   var headers = '';
   for (var header in this.streamDetails.responseHeaders) {
     headers += header + ': ' +
         this.streamDetails.responseHeaders[header] + '\n';
   }
   this.plugin_.setAttribute('headers', headers);
 
   if (window.top == window)
@@ skipping 63 matching lines @@
     var pageUpHandler = function() {
       // Go to the previous page if we are fit-to-page.
       if (this.viewport_.fittingType == Viewport.FittingType.FIT_TO_PAGE) {
         this.viewport_.goToPage(this.viewport_.getMostVisiblePage() - 1);
         // Since we do the movement of the page.
         e.preventDefault();
       } else if (fromScriptingAPI) {
         position.y -= this.viewport.size.height;
         this.viewport.position = position;
       }
-    };
+    }.bind(this);
     var pageDownHandler = function() {
       // Go to the next page if we are fit-to-page.
       if (this.viewport_.fittingType == Viewport.FittingType.FIT_TO_PAGE) {
         this.viewport_.goToPage(this.viewport_.getMostVisiblePage() + 1);
         // Since we do the movement of the page.
         e.preventDefault();
       } else if (fromScriptingAPI) {
         position.y += this.viewport.size.height;
         this.viewport.position = position;
       }
-    };
+    }.bind(this);
 
     switch (e.keyCode) {
       case 32:  // Space key.
         if (e.shiftKey)
           pageUpHandler();
         else
           pageDownHandler();
         return;
       case 33:  // Page up key.
         pageUpHandler();
@@ skipping 359 matching lines @@
     window.parent.postMessage(message, '*');
   },
 
   /**
    * @type {Viewport} the viewport of the PDF viewer.
    */
   get viewport() {
     return this.viewport_;
   }
 };
-
-var viewer = new PDFViewer();