[Passwords] Set TYPE_TEXT_VARIATION_VISIBLE_PASSWORD on the text view

This patch means using font that allows to distinguish otherwise
indistinguishable characters. e.g between O and 0 or l and 1.

For this one, fonts that are applied on different platforms:
macOS - Menlo
Windows - Consolas
Chrome OS - DejaVu Sans Mono
Linux - DejaVu Sans Mono

while Roboto Mono is not among the TextAppearances that Chrome
on Android specifies, we can use
InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD on the text view to get a
similar result.

Bug: 768825
Change-Id: I87146a61a8d8d681f04cbe69fd9403327f1c21c9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2490325
Commit-Queue: Jaeyong Bae <jdragon.bae@gmail.com>
Reviewed-by: Ioana Pandele <ioanap@chromium.org>
Cr-Commit-Position: refs/heads/master@{#822018}

chrome/android/java/src/org/chromium/chrome/browser/password_manager/PasswordGenerationDialogCustomView.java

@@ -5,6 +5,7 @@
 package org.chromium.chrome.browser.password_manager;
 
 import android.content.Context;
+import android.text.InputType;
 import android.util.AttributeSet;
 import android.widget.LinearLayout;
 import android.widget.TextView;
@@ -38,6 +39,9 @@ public class PasswordGenerationDialogCustomView extends LinearLayout {
 
     public void setGeneratedPassword(String generatedPassword) {
         mGeneratedPasswordTextView.setText(generatedPassword);
+        mGeneratedPasswordTextView.setInputType(InputType.TYPE_CLASS_TEXT
+                | InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD
+                | InputType.TYPE_TEXT_FLAG_MULTI_LINE);
     }
 
     public void setSaveExplanationText(String saveExplanationText) {