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

runtime/vm/metrics.h

Index: runtime/vm/metrics.h
diff --git a/runtime/vm/metrics.h b/runtime/vm/metrics.h
index 6e96170ace99f332afadd0e0a0dd9526ffd0d5f8..87467ce5ee5f0192e80653dcdcb4bf334bc3ff0d 100644
--- a/runtime/vm/metrics.h
+++ b/runtime/vm/metrics.h
@@ -109,7 +109,6 @@ class Metric {
   DISALLOW_COPY_AND_ASSIGN(Metric);
 };
 
-
 // A Metric class that reports the maximum value observed.
 // Initial maximum is kMinInt64.
 class MaxMetric : public Metric {
@@ -119,7 +118,6 @@ class MaxMetric : public Metric {
   void SetValue(int64_t new_value);
 };
 
-
 // A Metric class that reports the minimum value observed.
 // Initial minimum is kMaxInt64.
 class MinMetric : public Metric {
@@ -129,55 +127,46 @@ class MinMetric : public Metric {
   void SetValue(int64_t new_value);
 };
 
-
 class MetricHeapOldUsed : public Metric {
  protected:
   virtual int64_t Value() const;
 };
 
-
 class MetricHeapOldCapacity : public Metric {
  protected:
   virtual int64_t Value() const;
 };
 
-
 class MetricHeapOldExternal : public Metric {
  protected:
   virtual int64_t Value() const;
 };
 
-
 class MetricHeapNewUsed : public Metric {
  protected:
   virtual int64_t Value() const;
 };
 
-
 class MetricHeapNewCapacity : public Metric {
  protected:
   virtual int64_t Value() const;
 };
 
-
 class MetricHeapNewExternal : public Metric {
  protected:
   virtual int64_t Value() const;
 };
 
-
 class MetricIsolateCount : public Metric {
  protected:
   virtual int64_t Value() const;
 };
 
-
 class MetricPeakRSS : public Metric {
  protected:
   virtual int64_t Value() const;
 };
 
-
 class MetricHeapUsed : public Metric {
  protected:
   virtual int64_t Value() const;