VM: Re-format to use at most one newline between functions

runtime/vm/service.h

Index: runtime/vm/service.h
diff --git a/runtime/vm/service.h b/runtime/vm/service.h
index e7a9430e4308008f2419a236cde5e890eadf22aa..e2761dd919b37cab6cd5f3234a9973b0700aa710 100644
--- a/runtime/vm/service.h
+++ b/runtime/vm/service.h
@@ -63,7 +63,6 @@ class RingServiceIdZone : public ServiceIdZone {
   ObjectIdRing::IdPolicy policy_;
 };
 
-
 class StreamInfo {
  public:
   explicit StreamInfo(const char* id) : id_(id), enabled_(false) {}
@@ -78,7 +77,6 @@ class StreamInfo {
   bool enabled_;
 };
 
-
 class Service : public AllStatic {
  public:
   // Handles a message which is not directed to an isolate.