Three columns in the Chromium perf dashboard overview.

dashboard/overview.html

Index: dashboard/overview.html
diff --git a/dashboard/overview.html b/dashboard/overview.html
index 67a2a36154d784649b233e8cc3d8bb1ebe225aac..0c3894a3f230d12916baa1bbb673c9e1a0c71904 100644
--- a/dashboard/overview.html
+++ b/dashboard/overview.html
@@ -88,6 +88,8 @@
             <script>DisplayGraph("android-gn/image_decoding_benchmark");</script>
             <script>DisplayGraph("android-gn/spaceport");</script>
             <script>DisplayGraph("android-gn/scrolling_benchmark");</script>
+        </tr>
+        <tr>
             <script>DisplayGraph("android-gn/kraken");</script>
         </tr>
       </table>
@@ -102,6 +104,8 @@
             <script>DisplayGraph("android-nexus4/image_decoding_benchmark");</script>
             <script>DisplayGraph("android-nexus4/spaceport");</script>
             <script>DisplayGraph("android-nexus4/scrolling_benchmark");</script>
+        </tr>
+        <tr>
             <script>DisplayGraph("android-nexus4/kraken");</script>
         </tr>
       </table>
@@ -116,6 +120,8 @@
             <script>DisplayGraph("android-nexus10/image_decoding_benchmark");</script>
             <script>DisplayGraph("android-nexus10/spaceport");</script>
             <script>DisplayGraph("android-nexus10/scrolling_benchmark");</script>
+        </tr>
+        <tr>
             <script>DisplayGraph("android-nexus10/kraken");</script>
         </tr>
       </table>