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

runtime/vm/store_buffer.h

Index: runtime/vm/store_buffer.h
diff --git a/runtime/vm/store_buffer.h b/runtime/vm/store_buffer.h
index 45a0957d2bc595784e5949ca25c909486faf97d6..29cbef3283c8ac4cc49a27d48365d48008168387 100644
--- a/runtime/vm/store_buffer.h
+++ b/runtime/vm/store_buffer.h
@@ -74,7 +74,6 @@ class PointerBlock {
   DISALLOW_COPY_AND_ASSIGN(PointerBlock);
 };
 
-
 // A synchronized collection of pointer blocks of a particular size.
 // This class is meant to be used as a base (note PushBlockImpl is protected).
 // The global list of cached empty blocks is currently per-size.
@@ -139,7 +138,6 @@ class BlockStack {
   DISALLOW_COPY_AND_ASSIGN(BlockStack);
 };
 
-
 static const int kStoreBufferBlockSize = 1024;
 class StoreBuffer : public BlockStack<kStoreBufferBlockSize> {
  public:
@@ -158,10 +156,8 @@ class StoreBuffer : public BlockStack<kStoreBufferBlockSize> {
   bool Overflowed();
 };
 
-
 typedef StoreBuffer::Block StoreBufferBlock;
 
-
 static const int kMarkingStackBlockSize = 64;
 class MarkingStack : public BlockStack<kMarkingStackBlockSize> {
  public:
@@ -171,7 +167,6 @@ class MarkingStack : public BlockStack<kMarkingStackBlockSize> {
   }
 };
 
-
 }  // namespace dart
 
 #endif  // RUNTIME_VM_STORE_BUFFER_H_