Attach positions to methods with interceptors.

lib/compiler/implementation/ssa/builder.dart

Index: lib/compiler/implementation/ssa/builder.dart
diff --git a/lib/compiler/implementation/ssa/builder.dart b/lib/compiler/implementation/ssa/builder.dart
index 0b5d695547ae73f3c9bfe4edd4541dd7a1a407ae..45f15b673610ffaabeefaa59eb0fee187b0a8660 100644
--- a/lib/compiler/implementation/ssa/builder.dart
+++ b/lib/compiler/implementation/ssa/builder.dart
@@ -2103,9 +2103,11 @@ class SsaBuilder extends ResolvedVisitor implements Visitor {
       HStatic target = new HStatic(staticInterceptor);
       add(target);
       List<HInstruction> inputs = <HInstruction>[target, receiver];
-      push(new HInvokeInterceptor(selector, inputs, !hasGetter));
+      pushWithPosition(new HInvokeInterceptor(selector, inputs, !hasGetter),
+                       send);
     } else {
-      push(new HInvokeDynamicGetter(selector, null, receiver, !hasGetter));
+      pushWithPosition(
+          new HInvokeDynamicGetter(selector, null, receiver, !hasGetter), send);
     }
   }
 
@@ -2426,7 +2428,7 @@ class SsaBuilder extends ResolvedVisitor implements Visitor {
       visit(node.receiver);
       inputs.add(pop());
       addGenericSendArgumentsToList(node.arguments, inputs);
-      push(new HInvokeInterceptor(selector, inputs));
+      pushWithPosition(new HInvokeInterceptor(selector, inputs), node);
       return;
     }