Add getClassList RPC

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 71bda63a091fd903a1297b2f17253d86391df70b..91aa7f373ab25c6a17efbae3ad208560dd5e6640 100644
--- a/runtime/vm/service/service.idl
+++ b/runtime/vm/service/service.idl
@@ -45,11 +45,11 @@ interface Service {
   getTagProfile(isolateId string) TagProfile
 
   // Returns an allocation profile for an isolate.
-  // 
+  //
   // <code>reset</code> is optional and indicates whether allocation
   // accumulators should be reset.
   //
-  // <code>gc</code> is optional and indicates whether a full 
+  // <code>gc</code> is optional and indicates whether a full
   getAllocationProfile(isolateId string,
                        reset bool,
                        gc GCOption) AllocationProfile
@@ -73,6 +73,8 @@ interface Service {
   getInboundReferences(isolateId string,
                        targetId string,
                        limit int) InboundReferences
+
+  getClassList(isolateId string) ClassList
 }
 
 
@@ -132,6 +134,11 @@ struct CodeRef extends ObjectRef {
 }
 
 
+struct ClassRef extends ObjectRef {
+  placeholder int
+}
+
+
 // A <code>FunctionRef</code> encodes a reference to a <code>Function</code> object.
 struct FunctionRef extends ObjectRef {
   placeholder int
@@ -156,6 +163,11 @@ struct ScriptRef extends ObjectRef {
 }
 
 
+struct Class extends Object {
+  placeholder int
+}
+
+
 // A <code>Location</code> encodes a location withing a dart script.
 //
 // TODO(turnidge): Should this really be broken out as its own type?
@@ -272,6 +284,11 @@ struct InboundReference {
 }
 
 
+struct ClassList {
+  classes []ClassRef
+}
+
+
 // A <code>GCOption</code> is used to indicate which form of garbage
 // collection is requested.
 enum GCOption {