Support column-based breakpoints in the VM and Observatory.

runtime/observatory/lib/src/elements/script_inset.html

Index: runtime/observatory/lib/src/elements/script_inset.html
diff --git a/runtime/observatory/lib/src/elements/script_inset.html b/runtime/observatory/lib/src/elements/script_inset.html
index ac2c08c752152675643a2456ebd6d07c2bd839f9..a76ae424bebc6f482aedcc14d2621a94a82c8ce7 100644
--- a/runtime/observatory/lib/src/elements/script_inset.html
+++ b/runtime/observatory/lib/src/elements/script_inset.html
@@ -39,11 +39,7 @@
       .currentCol {
         background-color: #6cf;
       }
-      .breakAnnotation {
-        background-color: #e66;
-        color: white;
-      }
-      .hitsNone, .hitsNotExecuted, .hitsExecuted {
+      .hitsCurrent, .hitsNone, .hitsNotExecuted, .hitsExecuted {
         display: table-cell;
         vertical-align: top;
         font: 400 14px consolas, courier, monospace;
@@ -52,6 +48,10 @@
         text-align: right;
         color: #a8a8a8;
       }
+      .hitsCurrent {
+        background-color: #6cf;
+        color: black;
+      }
       .hitsNotExecuted {
         background-color: #faa;
       }
@@ -87,6 +87,14 @@
         color: white;
         background-color: #e66;
       }
+      .unresolvedBreakAnnotation {
+        color: white;
+        background-color: #cac;
+      }
+      .resolvedBreakAnnotation {
+        color: white;
+        background-color: #e66;
+      }
     </style>
   </template>
 </polymer-element>