Fix CSS styling on the history table

Bug: GERRIT-196
Signed-off-by: Shawn O. Pearce <sop@google.com>
diff --git a/src/main/java/com/google/gerrit/client/patches/HistoryTable.java b/src/main/java/com/google/gerrit/client/patches/HistoryTable.java
index d73aea2..7cdec82 100644
--- a/src/main/java/com/google/gerrit/client/patches/HistoryTable.java
+++ b/src/main/java/com/google/gerrit/client/patches/HistoryTable.java
@@ -34,10 +34,9 @@
   HistoryTable(final PatchScreen parent) {
     setStyleName("gerrit-PatchHistoryTable");
     screen = parent;
-    table.addStyleName("gerrit-PatchHistoryTable");
+    table.addStyleName("gerrit-ChangeTable");
   }
 
-
   void onClick(final HistoryRadio b) {
     switch (b.file) {
       case 0: