trooper-o-matic: Add patch attempt timeline view to CQ graphs

appengine/trooper_o_matic/ui/tom-patch-summary.css

Index: appengine/trooper_o_matic/ui/tom-patch-summary.css
diff --git a/appengine/trooper_o_matic/ui/tom-patch-summary.css b/appengine/trooper_o_matic/ui/tom-patch-summary.css
index e12a5ef551a7afb152bd047e216bd12e3e281823..fe0ab4d538739f25dbe0b14492306a0b0c5a82c0 100644
--- a/appengine/trooper_o_matic/ui/tom-patch-summary.css
+++ b/appengine/trooper_o_matic/ui/tom-patch-summary.css
@@ -91,4 +91,33 @@ a {
 
 .build-bubble.failed {
   background: #e88;
-}
+}
+
+.attempt {
+  position: absolute;
+  top: 2px;
+  box-shadow: 0 1px 3px #888;
+  min-width: 5px;
+  padding: 5px;
+  padding-left: 0px;
+  color: black;
+  white-space: nowrap;
+  overflow: hidden;
+}
+
+.attempt:hover {
+  min-width: -webkit-fit-content;
+  min-width: auto;
+}
+
+.attempt.success-true {
+  background: #9e6;
+}
+
+.attempt.success-false {
+  background: #e88;
+}
+
+.attempt.success-null {
+  background: #ff7;
+}