Enable NeedsBraces check and fix some checkstyle issues.

chrome/android/java/src/org/chromium/chrome/browser/WebappAuthenticator.java

 // Copyright 2013 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;
 
 import android.annotation.SuppressLint;
 import android.content.Context;
 import android.os.AsyncTask;
 import android.util.Log;
@@ skipping 111 matching lines @@
                 Log.e(TAG, "Could not close key input stream '" + file + "': " + e);
             }
         }
     }
 
     private static boolean writeKeyToFile(Context context, String basename, SecretKey key) {
         File file = context.getFileStreamPath(basename);
         byte[] keyBytes = key.getEncoded();
         FileOutputStream output = null;
         if (MAC_KEY_BYTE_COUNT != keyBytes.length) {
-            Log.e(TAG, "writeKeyToFile got key encoded bytes length " + keyBytes.length +
-                       "; expected " + MAC_KEY_BYTE_COUNT);
+            Log.e(TAG, "writeKeyToFile got key encoded bytes length " + keyBytes.length
+                    + "; expected " + MAC_KEY_BYTE_COUNT);
             return false;
         }
 
         try {
             output = new FileOutputStream(file);
             output.write(keyBytes);
             return true;
         } catch (Exception e) {
             Log.e(TAG, "Could not write key to '" + file + "': " + e);
             return false;
@@ skipping 76 matching lines @@
             }
             Mac mac = Mac.getInstance(MAC_ALGORITHM_NAME);
             mac.init(key);
             return mac;
         } catch (GeneralSecurityException e) {
             Log.w(TAG, "Error in creating MAC instance", e);
             return null;
         }
     }
 }