Format all Java files with google-java-format

Having a standard tool for formatting saves reviewers' valuable time.
google-java-format is Google's standard formatter and is somewhat
inspired by gofmt[1]. This commit formats everything using
google-java-format version 1.2.

The downside of this one-off formatting is breaking blame. This can be
somewhat hacked around with a tool like git-hyper-blame[2], but it's
definitely not optimal until/unless this kind of feature makes its way
to git core.

Not in this change:
* Tool support, e.g. Eclipse. The command must be run manually [3].
* Documentation of best practice, e.g. new 100-column default.

[1] https://talks.golang.org/2015/gofmt-en.slide#3
[2] https://commondatastorage.googleapis.com/chrome-infra-docs/flat/depot_tools/docs/html/git-hyper-blame.html
[3] git ls-files | grep java$ | xargs google-java-format -i

Change-Id: Id5f3c6de95ce0b68b41f0a478b5c99a93675aaa3
Signed-off-by: David Pursehouse <dpursehouse@collab.net>

gerrit-server/src/main/java/com/google/gerrit/server/account/AccountUserNameException.java

@@ -15,9 +15,8 @@
 package com.google.gerrit.server.account;
 
 /**
- * Thrown by {@link AccountManager} if the user name for a newly created account
- * could not be set and the realm does not allow the user to set a user name
- * manually.
+ * Thrown by {@link AccountManager} if the user name for a newly created account could not be set
+ * and the realm does not allow the user to set a user name manually.
  */
 public class AccountUserNameException extends AccountException {
   private static final long serialVersionUID = 1L;