PDF: Add alt/option key to Go To Page keyboard shortcut

chrome/browser/resources/pdf/pdf.js

Index: chrome/browser/resources/pdf/pdf.js
diff --git a/chrome/browser/resources/pdf/pdf.js b/chrome/browser/resources/pdf/pdf.js
index d5ba48f0ffc695e88b5c64354f2142ba0a61d50c..15c85e3a022b4804c1df4e5bf5b94b95f363e42f 100644
--- a/chrome/browser/resources/pdf/pdf.js
+++ b/chrome/browser/resources/pdf/pdf.js
@@ -380,11 +380,9 @@ PDFViewer.prototype = {
         }
         return;
       case 71: // g key.
-        if (this.materialToolbar_ && (e.ctrlKey || e.metaKey)) {
+        if (this.materialToolbar_ && (e.ctrlKey || e.metaKey) && e.altKey) {
           this.toolbarManager_.showToolbars();
           this.materialToolbar_.selectPageNumber();
-          // To prevent the default "find text" behaviour in Chrome.
-          e.preventDefault();
         }
         return;
       case 219:  // left bracket.