Use href="javascript;" for All {Side-by-Side,Unified} links

These links shouldn't have an anchor location. There is nothing for
the browser to remember or visit if it were opened in a new tab for
example. Worse the code that used to be here was wrong, you can't
rely on History.getToken() to give you an accurate value as the UI
for the next screen is being constructed while the current screen
is still displayed. So the code was always sampling the old URL,
not the URL for the change.

Change-Id: I7e02d5a87e358eeecce05a35c42ce07f71db2058
diff --git a/gerrit-gwtui/src/main/java/com/google/gerrit/client/changes/PatchTable.java b/gerrit-gwtui/src/main/java/com/google/gerrit/client/changes/PatchTable.java
index 265cf3e..4f30c58 100644
--- a/gerrit-gwtui/src/main/java/com/google/gerrit/client/changes/PatchTable.java
+++ b/gerrit-gwtui/src/main/java/com/google/gerrit/client/changes/PatchTable.java
@@ -23,10 +23,10 @@
 import com.google.gerrit.client.ui.PatchLink;
 import com.google.gerrit.common.data.PatchSetDetail;
 import com.google.gerrit.reviewdb.client.Patch;
-import com.google.gerrit.reviewdb.client.PatchSet;
 import com.google.gerrit.reviewdb.client.Patch.ChangeType;
 import com.google.gerrit.reviewdb.client.Patch.Key;
 import com.google.gerrit.reviewdb.client.Patch.PatchType;
+import com.google.gerrit.reviewdb.client.PatchSet;
 import com.google.gwt.core.client.GWT;
 import com.google.gwt.core.client.Scheduler;
 import com.google.gwt.core.client.Scheduler.RepeatingCommand;
@@ -35,8 +35,8 @@
 import com.google.gwt.event.dom.client.KeyCodes;
 import com.google.gwt.event.dom.client.KeyPressEvent;
 import com.google.gwt.user.client.Command;
-import com.google.gwt.user.client.History;
 import com.google.gwt.user.client.Window;
+import com.google.gwt.user.client.ui.Anchor;
 import com.google.gwt.user.client.ui.Composite;
 import com.google.gwt.user.client.ui.FlowPanel;
 import com.google.gwt.user.client.ui.HTMLTable.Cell;
@@ -436,32 +436,27 @@
     }
 
     void initializeLastRow(int row) {
-      table.setWidget(
-          row,
-          C_SIDEBYSIDE - 2,
-          new InlineHyperlink(Util.C.buttonDiffAllSideBySide(), History
-              .getToken()) {
-            @Override
-            public void go() {
-              for (Patch p : detail.getPatches()) {
-                openWindow(Dispatcher.toPatchSideBySide(base, p.getKey()));
-              }
-            }
-          });
+      Anchor sideBySide = new Anchor(Util.C.buttonDiffAllSideBySide());
+      sideBySide.addClickHandler(new ClickHandler() {
+        @Override
+        public void onClick(ClickEvent event) {
+          for (Patch p : detail.getPatches()) {
+            openWindow(Dispatcher.toPatchSideBySide(base, p.getKey()));
+          }
+        }
+      });
+      table.setWidget(row, C_SIDEBYSIDE - 2, sideBySide);
 
       int C_UNIFIED = C_SIDEBYSIDE - 2 + 1;
-      table.setWidget(
-          row,
-          C_UNIFIED,
-          new InlineHyperlink(Util.C.buttonDiffAllUnified(), History
-              .getToken()) {
-            @Override
-            public void go() {
-              for (Patch p : detail.getPatches()) {
-                openWindow(Dispatcher.toPatchUnified(base, p.getKey()));
-              }
-            }
-          });
+      Anchor unified = new Anchor(Util.C.buttonDiffAllUnified());
+      unified.addClickHandler(new ClickHandler() {
+        public void onClick(ClickEvent event) {
+          for (Patch p : detail.getPatches()) {
+            openWindow(Dispatcher.toPatchUnified(base, p.getKey()));
+          }
+        };
+      });
+      table.setWidget(row, C_UNIFIED, unified);
     }
 
     private void openWindow(String token) {