Add getCallSiteData to the VM service.

runtime/vm/object.h

Index: runtime/vm/object.h
diff --git a/runtime/vm/object.h b/runtime/vm/object.h
index 254ec19db168bd8e88a05e0b30c79e670626ab11..41857e510c993dcee15ed64dba7e6d631056de31 100644
--- a/runtime/vm/object.h
+++ b/runtime/vm/object.h
@@ -1807,6 +1807,8 @@ class Function : public Object {
   }
   bool HasCode() const;
 
+  RawGrowableObjectArray* CollectICsWithSourcePositions() const;
+
   static intptr_t instructions_offset() {
     return OFFSET_OF(RawFunction, instructions_);
   }
@@ -3872,6 +3874,10 @@ class ICData : public Object {
   bool HasRangeFeedback() const;
   RangeFeedback DecodeRangeFeedbackAt(intptr_t idx) const;
 
+  void PrintToJSONArray(JSONArray* jsarray,
+                        intptr_t line,
+                        intptr_t column) const;
+
  private:
   RawArray* ic_data() const {
     return raw_ptr()->ic_data_;