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

runtime/vm/clustered_snapshot.h

Index: runtime/vm/clustered_snapshot.h
diff --git a/runtime/vm/clustered_snapshot.h b/runtime/vm/clustered_snapshot.h
index 7e7c77a880c75383953954163393de18a8a90594..f68c6b8cc2bc9f1c30a06ee2bcab820e9f13f05d 100644
--- a/runtime/vm/clustered_snapshot.h
+++ b/runtime/vm/clustered_snapshot.h
@@ -64,7 +64,6 @@ class SerializationCluster : public ZoneAllocated {
   virtual void WriteFill(Serializer* serializer) = 0;
 };
 
-
 class DeserializationCluster : public ZoneAllocated {
  public:
   DeserializationCluster() : start_index_(-1), stop_index_(-1) {}
@@ -87,7 +86,6 @@ class DeserializationCluster : public ZoneAllocated {
   intptr_t stop_index_;
 };
 
-
 class SmiObjectIdPair {
  public:
   SmiObjectIdPair() : smi_(NULL), id_(0) {}
@@ -99,7 +97,6 @@ class SmiObjectIdPair {
   }
 };
 
-
 class SmiObjectIdPairTrait {
  public:
   typedef RawSmi* Key;
@@ -112,10 +109,8 @@ class SmiObjectIdPairTrait {
   static inline bool IsKeyEqual(Pair kv, Key key) { return kv.smi_ == key; }
 };
 
-
 typedef DirectChainedHashMap<SmiObjectIdPairTrait> SmiObjectIdMap;
 
-
 class Serializer : public StackResource {
  public:
   Serializer(Thread* thread,
@@ -280,7 +275,6 @@ class Serializer : public StackResource {
   DISALLOW_IMPLICIT_CONSTRUCTORS(Serializer);
 };
 
-
 class Deserializer : public StackResource {
  public:
   Deserializer(Thread* thread,
@@ -380,7 +374,6 @@ class Deserializer : public StackResource {
   DeserializationCluster** clusters_;
 };
 
-
 class FullSnapshotWriter {
  public:
   static const intptr_t kInitialSize = 64 * KB;
@@ -439,7 +432,6 @@ class FullSnapshotWriter {
   DISALLOW_COPY_AND_ASSIGN(FullSnapshotWriter);
 };
 
-
 class FullSnapshotReader {
  public:
   FullSnapshotReader(const Snapshot* snapshot,