Compile print_preview, part 5: reduce down to 104 errors

chrome/browser/resources/pdf/pdf_scripting_api.js

Index: chrome/browser/resources/pdf/pdf_scripting_api.js
diff --git a/chrome/browser/resources/pdf/pdf_scripting_api.js b/chrome/browser/resources/pdf/pdf_scripting_api.js
index 8b0b9d5c0a74119b67b67a22d8bb9945efb29613..64c5059360d15fe9782fb20d44934343e1cb2cb8 100644
--- a/chrome/browser/resources/pdf/pdf_scripting_api.js
+++ b/chrome/browser/resources/pdf/pdf_scripting_api.js
@@ -7,6 +7,7 @@
  * the PDF viewer so that it can be customized by things like print preview.
  * @param {Window} window the window of the page containing the pdf viewer.
  * @param {string} extensionUrl the url of the PDF extension.
+ * @constructor
  */
 function PDFScriptingAPI(window, extensionUrl) {
   this.extensionUrl_ = extensionUrl;
@@ -22,6 +23,13 @@ function PDFScriptingAPI(window, extensionUrl) {
         this.setDestinationWindow(event.source);
         break;
       case 'viewport':
+        event.data = /**
+                      * @type {{pageX: number,
+                      *         pageY: number,
+                      *         pageWidth: number,
+                      *         viewportWidth: number,
+                      *         viewportHeight: number}}
+                      */(event.data);
         if (this.viewportChangedCallback_)
           this.viewportChangedCallback_(event.data.pageX,
                                         event.data.pageY,
@@ -35,6 +43,7 @@ function PDFScriptingAPI(window, extensionUrl) {
         break;
       case 'getAccessibilityJSONReply':
         if (this.accessibilityCallback_) {
+          event.data = /** @type {{json: string}} */(event.data);
           this.accessibilityCallback_(event.data.json);
           this.accessibilityCallback_ = null;
         }
@@ -166,7 +175,8 @@ PDFScriptingAPI.prototype = {
  */
 function PDFCreateOutOfProcessPlugin(src) {
   var EXTENSION_URL = 'chrome-extension://mhjfbmdgcfjbbpaeojofohoefgiehjai';
-  var iframe = window.document.createElement('iframe');
+  var iframe = assertInstanceof(window.document.createElement('iframe'),
+                                HTMLIFrameElement);
   iframe.setAttribute('src', EXTENSION_URL + '/index.html?' + src);
   var client = new PDFScriptingAPI(window, EXTENSION_URL);