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

runtime/vm/timer.h

Index: runtime/vm/timer.h
diff --git a/runtime/vm/timer.h b/runtime/vm/timer.h
index ac2e7a097e3ed22bb8ff2dc47b90c56aaa009c84..2f5ce4699f8b3f9c35f1d3c115a93b5194712b3e 100644
--- a/runtime/vm/timer.h
+++ b/runtime/vm/timer.h
@@ -98,7 +98,6 @@ class Timer : public ValueObject {
   DISALLOW_COPY_AND_ASSIGN(Timer);
 };
 
-
 // The class TimerScope is used to start and stop a timer within a scope.
 // It is used as follows:
 // {
@@ -139,7 +138,6 @@ class TimerScope : public StackResource {
   DISALLOW_COPY_AND_ASSIGN(TimerScope);
 };
 
-
 class PauseTimerScope : public StackResource {
  public:
   PauseTimerScope(bool flag, Timer* timer, Thread* thread = NULL)
@@ -168,7 +166,6 @@ class PauseTimerScope : public StackResource {
   DISALLOW_COPY_AND_ASSIGN(PauseTimerScope);
 };
 
-
 }  // namespace dart
 
 #endif  // RUNTIME_VM_TIMER_H_