Remove unnecesary ApiCompatibilityUtils calls.

chrome/android/java/src/org/chromium/chrome/browser/firstrun/AccountFirstRunView.java

 // Copyright 2015 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.firstrun;
 
 import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.Color;
 import android.text.TextUtils;
@@ skipping 418 matching lines @@
     }
 
     /**
      * Updates the view to show that sign in has completed.
      */
     public void switchToSignedMode() {
         mSignedIn = true;
         updateProfileName();
 
         mSpinner.setEnabled(false);
-        ApiCompatibilityUtils.setBackgroundForView(mSpinner, null);
+        mSpinner.setBackground(null);
         mPositiveButton.setText(getResources().getText(R.string.fre_done));
         mPositiveButton.setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {
                 mListener.onSigningInCompleted(mAccountName);
             }
         });
         mNegativeButton.setText(getResources().getText(R.string.fre_settings));
         mNegativeButton.setOnClickListener(new OnClickListener() {
             @Override
@@ skipping 44 matching lines @@
     public boolean isInForcedAccountMode() {
         return mForcedAccountName != null;
     }
 
     @Override
     public void onPositionChanged(int i) {
         mPositionSetProgrammatically = true;
         mSpinner.setSelection(i);
     }
 }