Compile print_preview, part 1: remove all warnings

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 2b98c7c797323f0ed02f790c0f0f4ce50812651d..8b0b9d5c0a74119b67b67a22d8bb9945efb29613 100644
--- a/chrome/browser/resources/pdf/pdf_scripting_api.js
+++ b/chrome/browser/resources/pdf/pdf_scripting_api.js
@@ -49,7 +49,7 @@ PDFScriptingAPI.prototype = {
    * Send a message to the extension. If we try to send messages prior to the
    * extension being ready to receive messages (i.e. before it has finished
    * loading) we queue up the messages and flush them later.
-   * @param {Object} the message to send.
+   * @param {Object} message The message to send.
    */
   sendMessage_: function(message) {
     if (!this.pdfWindow_) {