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

runtime/bin/isolate_data.cc

Index: runtime/bin/isolate_data.cc
diff --git a/runtime/bin/isolate_data.cc b/runtime/bin/isolate_data.cc
index f3eafa02bf575b63b4450243ac99e907b7c1002a..52b2e48c3f9d3daead01bb43313e5690dd2f62f5 100644
--- a/runtime/bin/isolate_data.cc
+++ b/runtime/bin/isolate_data.cc
@@ -31,7 +31,6 @@ IsolateData::IsolateData(const char* url,
   }
 }
 
-
 void IsolateData::OnIsolateShutdown() {
   if (builtin_lib_ != NULL) {
     Dart_DeletePersistentHandle(builtin_lib_);
@@ -39,7 +38,6 @@ void IsolateData::OnIsolateShutdown() {
   }
 }
 
-
 IsolateData::~IsolateData() {
   free(script_url);
   script_url = NULL;