Clean up various CheckStyle warnings

- Remove unnecessary public and static modifiers
- Change order of modifiers to follow JLS recommendation
- Add missing { } on if-blocks

Change-Id: Ibc43caad316369feaf30a8ee4f5f70665bc66f3c
diff --git a/gerrit-gwtui/src/main/java/net/codemirror/addon/Addons.java b/gerrit-gwtui/src/main/java/net/codemirror/addon/Addons.java
index 5365cc5..7c8b362 100644
--- a/gerrit-gwtui/src/main/java/net/codemirror/addon/Addons.java
+++ b/gerrit-gwtui/src/main/java/net/codemirror/addon/Addons.java
@@ -20,7 +20,7 @@
 import com.google.gwt.resources.client.DataResource.DoNotEmbed;
 
 public interface Addons extends ClientBundle {
-  public static final Addons I = GWT.create(Addons.class);
+  Addons I = GWT.create(Addons.class);
 
   @Source("merge_bundled.js") @DoNotEmbed DataResource merge_bundled();
 }
diff --git a/gerrit-pgm/src/main/java/com/google/gerrit/pgm/init/VersionedAuthorizedKeysOnInit.java b/gerrit-pgm/src/main/java/com/google/gerrit/pgm/init/VersionedAuthorizedKeysOnInit.java
index 9ef6956..1c72600 100644
--- a/gerrit-pgm/src/main/java/com/google/gerrit/pgm/init/VersionedAuthorizedKeysOnInit.java
+++ b/gerrit-pgm/src/main/java/com/google/gerrit/pgm/init/VersionedAuthorizedKeysOnInit.java
@@ -49,7 +49,7 @@
 import java.util.List;
 
 public class VersionedAuthorizedKeysOnInit extends VersionedMetaData {
-  public static interface Factory {
+  public interface Factory {
     VersionedAuthorizedKeysOnInit create(Account.Id accountId);
   }
 
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/account/DeleteWatchedProjects.java b/gerrit-server/src/main/java/com/google/gerrit/server/account/DeleteWatchedProjects.java
index 674cba6..b91378e 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/account/DeleteWatchedProjects.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/account/DeleteWatchedProjects.java
@@ -64,9 +64,10 @@
     if (input != null) {
       List<AccountProjectWatch.Key> keysToDelete = new LinkedList<>();
       for (String projectKeyToDelete : input) {
-        if (!watchedProjectsMap.containsKey(projectKeyToDelete))
+        if (!watchedProjectsMap.containsKey(projectKeyToDelete)) {
           throw new UnprocessableEntityException(projectKeyToDelete
               + " is not currently watched by this user.");
+        }
         keysToDelete.add(watchedProjectsMap.get(projectKeyToDelete).getKey());
       }
       dbProvider.get().accountProjectWatches().deleteKeys(keysToDelete);
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/account/VersionedAuthorizedKeys.java b/gerrit-server/src/main/java/com/google/gerrit/server/account/VersionedAuthorizedKeys.java
index 4662f87..dc96d49 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/account/VersionedAuthorizedKeys.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/account/VersionedAuthorizedKeys.java
@@ -165,7 +165,7 @@
     }
   }
 
-  public static interface Factory {
+  public interface Factory {
     VersionedAuthorizedKeys create(Account.Id accountId);
   }
 
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/mail/DeleteReviewerSender.java b/gerrit-server/src/main/java/com/google/gerrit/server/mail/DeleteReviewerSender.java
index 89daa1d..75f9f82 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/mail/DeleteReviewerSender.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/mail/DeleteReviewerSender.java
@@ -34,7 +34,7 @@
 public class DeleteReviewerSender extends ReplyToChangeSender {
   private final Set<Account.Id> reviewers = new HashSet<>();
 
-  public static interface Factory extends
+  public interface Factory extends
       ReplyToChangeSender.Factory<DeleteReviewerSender> {
     @Override
     DeleteReviewerSender create(Project.NameKey project, Change.Id change);
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/notedb/ChangeBundle.java b/gerrit-server/src/main/java/com/google/gerrit/server/notedb/ChangeBundle.java
index 4d2a719..0dfd8c9 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/notedb/ChangeBundle.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/notedb/ChangeBundle.java
@@ -515,7 +515,7 @@
    * messages below.
    */
   @AutoValue
-  static abstract class ChangeMessageCandidate {
+  abstract static class ChangeMessageCandidate {
     static ChangeMessageCandidate create(ChangeMessage cm) {
       return new AutoValue_ChangeBundle_ChangeMessageCandidate(
           cm.getAuthor(),
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/query/change/ChangeData.java b/gerrit-server/src/main/java/com/google/gerrit/server/query/change/ChangeData.java
index 5eed391..ed7b134 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/query/change/ChangeData.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/query/change/ChangeData.java
@@ -844,7 +844,7 @@
    * @throws OrmException an error occurred reading the database.
    */
   public Collection<PatchSet> visiblePatchSets() throws OrmException {
-    return FluentIterable.from(patchSets()).filter(new Predicate<PatchSet>() {
+    Predicate<PatchSet> predicate = new Predicate<PatchSet>() {
       @Override
       public boolean apply(PatchSet input) {
         try {
@@ -852,7 +852,9 @@
         } catch (OrmException e) {
           return false;
         }
-      }}).toList();
+      }
+    };
+    return FluentIterable.from(patchSets()).filter(predicate).toList();
   }
 
 public void setPatchSets(Collection<PatchSet> patchSets) {