Major rework of vm service events.

runtime/vm/service/service.idl

Index: runtime/vm/service/service.idl
diff --git a/runtime/vm/service/service.idl b/runtime/vm/service/service.idl
index 2764e2375747cfcf8e8952c0f582dbdf11240e59..1b825a19d42f0b238edc67486aafb91988ae47ef 100644
--- a/runtime/vm/service/service.idl
+++ b/runtime/vm/service/service.idl
@@ -14,9 +14,6 @@ interface Service {
   // The response is a subtype of Object or ObjectRef.
   getObjectByAddress(address string, ref bool) Response
 
-  // Returns the list of breakpoints for an isolate.
-  getBreakpoints(isolateId string) BreakpointList
-
   // Adds a breakpoint at the specified line.
   //
   // TODO(turnidge): Make line an int instead of a string.
@@ -177,7 +174,6 @@ struct Instance extends Object {
 // A <code>Breakpoint</code> describes a debugger breakpoint.
 struct Breakpoint extends Object {
   breakpointNumber int
-  enabled          bool
   resolved         bool
   location         Location
 }
@@ -308,12 +304,6 @@ struct TagProfile extends Response {
 }
 
 
-// A list of <code>Breakpoint</code>
-struct BreakpointList extends Response {
-  breakpoints []Breakpoint
-}
-
-
 // An <code>AllocationProfile</code> encodes an allocation profile.
 struct AllocationProfile extends Response {
   todo int