ChangeEvent: Add 'who' and 'when' fields and methods

The 'when' field tells when the event occurred, and 'who' tells which
account performed the action that triggered the event.

Deprecate the existing events' get..() methods in favor of getWho().

Change-Id: I3fdae6c5b76eda8494bf3b5c95ea6bb077690d04

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/events/ChangeAbandonedListener.java

@@ -21,6 +21,7 @@ import com.google.gerrit.extensions.common.AccountInfo;
 @ExtensionPoint
 public interface ChangeAbandonedListener {
   interface Event extends RevisionEvent {
+    @Deprecated
     AccountInfo getAbandoner();
     String getReason();
   }

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/events/ChangeEvent.java

@@ -14,10 +14,14 @@
 
 package com.google.gerrit.extensions.events;
 
+import com.google.gerrit.extensions.common.AccountInfo;
 import com.google.gerrit.extensions.common.ChangeInfo;
 
+import java.sql.Timestamp;
+
 /** Interface to be extended by Events with a Change. */
 public interface ChangeEvent extends GerritEvent {
   ChangeInfo getChange();
+  AccountInfo getWho();
+  Timestamp getWhen();
 }
-

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/events/ChangeMergedListener.java

@@ -21,6 +21,7 @@ import com.google.gerrit.extensions.common.AccountInfo;
 @ExtensionPoint
 public interface ChangeMergedListener {
   interface Event extends RevisionEvent {
+    @Deprecated
     AccountInfo getMerger();
     /**
      * Represents the merged Revision when the submit strategy is cherry-pick or

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/events/ChangeRestoredListener.java

@@ -21,6 +21,7 @@ import com.google.gerrit.extensions.common.AccountInfo;
 @ExtensionPoint
 public interface ChangeRestoredListener {
   interface Event extends RevisionEvent {
+    @Deprecated
     AccountInfo getRestorer();
     String getReason();
   }

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/events/CommentAddedListener.java

@@ -24,6 +24,7 @@ import java.util.Map;
 @ExtensionPoint
 public interface CommentAddedListener {
   interface Event extends RevisionEvent {
+    @Deprecated
     AccountInfo getAuthor();
     String getComment();
     Map<String, ApprovalInfo> getApprovals();

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/events/DraftPublishedListener.java

@@ -21,6 +21,7 @@ import com.google.gerrit.extensions.common.AccountInfo;
 @ExtensionPoint
 public interface DraftPublishedListener {
   interface Event extends RevisionEvent {
+    @Deprecated
     AccountInfo getPublisher();
   }
 

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/events/HashtagsEditedListener.java

@@ -23,6 +23,7 @@ import java.util.Collection;
 @ExtensionPoint
 public interface HashtagsEditedListener {
   interface Event extends ChangeEvent {
+    @Deprecated
     AccountInfo getEditor();
     Collection<String> getHashtags();
     Collection<String> getAddedHashtags();

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/events/RevisionCreatedListener.java

@@ -21,6 +21,7 @@ import com.google.gerrit.extensions.common.AccountInfo;
 @ExtensionPoint
 public interface RevisionCreatedListener {
   interface Event extends RevisionEvent {
+    @Deprecated
     AccountInfo getUploader();
   }
 

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/events/TopicEditedListener.java

@@ -21,6 +21,7 @@ import com.google.gerrit.extensions.common.AccountInfo;
 @ExtensionPoint
 public interface TopicEditedListener {
   interface Event extends ChangeEvent {
+    @Deprecated
     AccountInfo getEditor();
     String getOldTopic();
   }