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

runtime/vm/flow_graph.h

Index: runtime/vm/flow_graph.h
diff --git a/runtime/vm/flow_graph.h b/runtime/vm/flow_graph.h
index 705f6743a6004028fe20aadbfa08396b546beae9..5c215af24653b41d7ebf572faa3f738f8eea90b9 100644
--- a/runtime/vm/flow_graph.h
+++ b/runtime/vm/flow_graph.h
@@ -43,7 +43,6 @@ class BlockIterator : public ValueObject {
   intptr_t current_;
 };
 
-
 struct ConstantPoolTrait {
   typedef ConstantInstr* Value;
   typedef const Object& Key;
@@ -75,7 +74,6 @@ struct ConstantPoolTrait {
   }
 };
 
-
 // Class to encapsulate the construction and manipulation of the flow graph.
 class FlowGraph : public ZoneAllocated {
  public:
@@ -420,7 +418,6 @@ class FlowGraph : public ZoneAllocated {
   intptr_t inlining_id_;
 };
 
-
 class LivenessAnalysis : public ValueObject {
  public:
   LivenessAnalysis(intptr_t variable_count,
@@ -495,7 +492,6 @@ class LivenessAnalysis : public ValueObject {
   GrowableArray<BitVector*> live_in_;
 };
 
-
 // Information about side effect free paths between blocks.
 class BlockEffects : public ZoneAllocated {
  public:
@@ -523,7 +519,6 @@ class BlockEffects : public ZoneAllocated {
   GrowableArray<BitVector*> available_at_;
 };
 
-
 class DefinitionWorklist : public ValueObject {
  public:
   DefinitionWorklist(FlowGraph* flow_graph, intptr_t initial_capacity)
@@ -564,7 +559,6 @@ class DefinitionWorklist : public ValueObject {
   BitVector* contains_vector_;
 };
 
-
 }  // namespace dart
 
 #endif  // RUNTIME_VM_FLOW_GRAPH_H_