Allow copying and viewing account credentials in PasswordEntryEditor

chrome/android/java/res/layout/password_entry_editor.xml

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright 2014 The Chromium Authors. All rights reserved.
      Use of this source code is governed by a BSD-style license that can be
      found in the LICENSE file. -->
 
 <ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:fillViewport="true" >
 
     <LinearLayout
+        android:id="@+id/password_entry_editor_layout"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:orientation="vertical"
         android:title="@string/password_entry_editor_title" >
 
         <TextView
             android:id="@+id/password_entry_editor_name"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_margin="2dp"
@@ skipping 48 matching lines @@
                 style="?android:attr/buttonBarButtonStyle"
                 android:layout_width="match_parent"
                 android:layout_height="match_parent"
                 android:layout_weight="1"
                 android:focusable="true"
                 android:text="@string/cancel" />
         </LinearLayout>
     </LinearLayout>
 
 </ScrollView>