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-main/src/main/java/Main.java

@@ -12,7 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-
 public final class Main {
   // We don't do any real work here because we need to import
   // the archive lookup code and we cannot import a class in
@@ -33,7 +32,6 @@ public final class Main {
     final String version = System.getProperty("java.specification.version");
     if (1.8 <= parse(version)) {
       return true;
-
     }
     System.err.println("fatal: Gerrit Code Review requires Java 8 or later");
     System.err.println("       (trying to run on Java " + version + ")");
@@ -57,6 +55,5 @@ public final class Main {
     }
   }
 
-  private Main() {
-  }
+  private Main() {}
 }