Avoid method name conflict in payments editor dialog.

EditorDialog.dismissDialog() incorrectly overrides
Dialog.dismissDialog(). This prevents correctly dismissing the dialog on
older versions of Android, e.g., Kit Kat and Jelly Bean.

Bug: 730829
Change-Id: Idf43f85bf3c6e7ebd15f3b73bfdabf8bcc8161cb
Reviewed-on: https://chromium-review.googlesource.com/530344
Reviewed-by: Ganggui Tang <gogerald@chromium.org>
Commit-Queue: Rouslan Solomakhin <rouslan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#478514}
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorDialog.java b/chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorDialog.java
index d4d1fff..c73f272 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorDialog.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorDialog.java
@@ -200,7 +200,7 @@
         toolbar.setNavigationOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                dismissDialog();
+                animateOutDialog();
             }
         });
 
@@ -270,17 +270,17 @@
             if (validateForm()) {
                 if (mEditorModel != null) mEditorModel.done();
                 mEditorModel = null;
-                dismissDialog();
+                animateOutDialog();
                 return;
             }
 
             if (mObserverForTest != null) mObserverForTest.onPaymentRequestEditorValidationError();
         } else if (view.getId() == R.id.payments_edit_cancel_button) {
-            dismissDialog();
+            animateOutDialog();
         }
     }
 
-    private void dismissDialog() {
+    private void animateOutDialog() {
         if (mDialogInOutAnimator != null || !isShowing()) return;
 
         Animator dropDown =