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

runtime/vm/assembler.h

Index: runtime/vm/assembler.h
diff --git a/runtime/vm/assembler.h b/runtime/vm/assembler.h
index 768297a2818d2f50f8b5049c42887fa402df7197..6beeb1eaa78ae7a081b64c3970efce2139d82038 100644
--- a/runtime/vm/assembler.h
+++ b/runtime/vm/assembler.h
@@ -24,7 +24,6 @@ class AssemblerFixup;
 class AssemblerBuffer;
 class MemoryRegion;
 
-
 // External labels keep a function pointer to allow them
 // to be called from code generated by the assembler.
 class ExternalLabel : public ValueObject {
@@ -41,7 +40,6 @@ class ExternalLabel : public ValueObject {
   const uword address_;
 };
 
-
 // Assembler fixups are positions in generated code that hold relocation
 // information that needs to be processed before finalizing the code
 // into executable memory.
@@ -68,7 +66,6 @@ class AssemblerFixup : public ZoneAllocated {
   friend class AssemblerBuffer;
 };
 
-
 // Assembler buffers are used to emit binary code. They grow on demand.
 class AssemblerBuffer : public ValueObject {
  public:
@@ -213,7 +210,6 @@ class AssemblerBuffer : public ValueObject {
   friend class AssemblerFixup;
 };
 
-
 struct ObjectPoolWrapperEntry {
   ObjectPoolWrapperEntry() : raw_value_(), type_(), equivalence_() {}
   explicit ObjectPoolWrapperEntry(const Object* obj)
@@ -231,7 +227,6 @@ struct ObjectPoolWrapperEntry {
   const Object* equivalence_;
 };
 
-
 // Pair type parameter for DirectChainedHashMap used for the constant pool.
 class ObjIndexPair {
  public:
@@ -289,13 +284,11 @@ class ObjIndexPair {
   Value value_;
 };
 
-
 enum Patchability {
   kPatchable,
   kNotPatchable,
 };
 
-
 class ObjectPoolWrapper : public ValueObject {
  public:
   intptr_t AddObject(const Object& obj, Patchability patchable = kNotPatchable);
@@ -320,12 +313,10 @@ class ObjectPoolWrapper : public ValueObject {
   DirectChainedHashMap<ObjIndexPair> object_pool_index_table_;
 };
 
-
 enum RestorePP { kRestoreCallerPP, kKeepCalleePP };
 
 }  // namespace dart
 
-
 #if defined(TARGET_ARCH_IA32)
 #include "vm/assembler_ia32.h"
 #elif defined(TARGET_ARCH_X64)