Refactor contact editor controller into its own class.

chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorView.java

 // Copyright 2016 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.
 
 package org.chromium.chrome.browser.payments.ui;
 
 import android.app.Activity;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.graphics.Color;
@@ skipping 316 matching lines @@
     public void show(final EditorModel editorModel) {
         setOnDismissListener(this);
         mEditorModel = editorModel;
 
         mLayout = (LinearLayout) LayoutInflater.from(mContext).inflate(
                 R.layout.payment_request_editor, null);
         setContentView(mLayout);
         prepareToolbar();
         prepareButtons();
         prepareEditor();
+        getWindow().setLayout(ViewGroup.LayoutParams.MATCH_PARENT,
+                ViewGroup.LayoutParams.MATCH_PARENT);
         show();
 
         // Immediately focus the first invalid field to make it faster to edit.
         final List<EditorFieldView> invalidViews = getViewsWithInvalidInformation();
         if (!invalidViews.isEmpty()) {
             mHandler.post(new Runnable() {
                 @Override
                 public void run() {
                     focusInputField(invalidViews.get(0));
                 }
@@ skipping 31 matching lines @@
         }
         return invalidViews;
     }
 
     private void focusInputField(View view) {
         view.requestFocus();
         view.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED);
         if (mObserverForTest != null) mObserverForTest.onPaymentRequestReadyToEdit();
     }
 }