[ModalDialog] Fix cancel on touch outside not initalized

Bug: 905248
Change-Id: Iab5d219feccbb265c72a83770d3a48bc368e2d10
Reviewed-on: https://chromium-review.googlesource.com/c/1336032Reviewed-by: Theresa <twellington@chromium.org>
Commit-Queue: Becky Zhou <huayinz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#608044}

chrome/android/java/src/org/chromium/chrome/browser/modaldialog/ModalDialogView.java

@@ -199,6 +199,7 @@ public class ModalDialogView implements View.OnClickListener {
         setTitleScrollable(mParams.titleScrollable);
         setMessage(mParams.message);
         setCustomView(mParams.customView);
+        setCancelOnTouchOutside(mParams.cancelOnTouchOutside);
 
         Resources resources = mDialogView.getResources();
         assert(mParams.positiveButtonTextId == 0 || mParams.positiveButtonText == null);