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/config/GitReceivePackGroupsProvider.java

@@ -20,19 +20,21 @@ import com.google.gerrit.server.group.SystemGroupBackend;
 import com.google.gerrit.server.util.ServerRequestContext;
 import com.google.gerrit.server.util.ThreadLocalRequestContext;
 import com.google.inject.Inject;
-
-import org.eclipse.jgit.lib.Config;
-
 import java.util.Collections;
+import org.eclipse.jgit.lib.Config;
 
 public class GitReceivePackGroupsProvider extends GroupSetProvider {
   @Inject
-  public GitReceivePackGroupsProvider(GroupBackend gb,
+  public GitReceivePackGroupsProvider(
+      GroupBackend gb,
       @GerritServerConfig Config config,
       ThreadLocalRequestContext threadContext,
       ServerRequestContext serverCtx) {
-    super(gb, threadContext, serverCtx, ImmutableList.copyOf(
-        config.getStringList("receive", null, "allowGroup")));
+    super(
+        gb,
+        threadContext,
+        serverCtx,
+        ImmutableList.copyOf(config.getStringList("receive", null, "allowGroup")));
 
     // If no group was set, default to "registered users"
     //