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

runtime/vm/instructions_dbc.h

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 // Classes that describe assembly patterns as used by inline caches.
 
 #ifndef RUNTIME_VM_INSTRUCTIONS_DBC_H_
 #define RUNTIME_VM_INSTRUCTIONS_DBC_H_
 
 #ifndef RUNTIME_VM_INSTRUCTIONS_H_
 #error Do not include instructions_dbc.h directly; use instructions.h instead.
@@ skipping 29 matching lines @@
   // Decodes a load sequence ending at 'end' (the last instruction of the
   // load sequence is the instruction before the one at end).  Returns the
   // address of the first instruction in the sequence.  Returns the register
   // being loaded and the index in the pool being read from in the output
   // parameters 'reg' and 'index' respectively.
   static uword DecodeLoadWordFromPool(uword end,
                                       Register* reg,
                                       intptr_t* index);
 };
 
-
 class CallPattern : public ValueObject {
  public:
   CallPattern(uword pc, const Code& code);
 
   RawICData* IcData();
 
   RawCode* TargetCode() const;
   void SetTargetCode(const Code& code) const;
 
   static void InsertDeoptCallAt(uword pc);
 
  private:
   const ObjectPool& object_pool_;
 
   uword end_;
   uword ic_data_load_end_;
 
   intptr_t target_code_pool_index_;
   ICData& ic_data_;
 
   DISALLOW_COPY_AND_ASSIGN(CallPattern);
 };
 
-
 class NativeCallPattern : public ValueObject {
  public:
   NativeCallPattern(uword pc, const Code& code);
 
   RawCode* target() const;
   void set_target(const Code& target) const;
 
   NativeFunction native_function() const;
   void set_native_function(NativeFunction target) const;
 
  private:
   const ObjectPool& object_pool_;
 
   uword end_;
   intptr_t native_function_pool_index_;
   intptr_t target_code_pool_index_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeCallPattern);
 };
 
-
 // Instance call that can switch between a direct monomorphic call, an IC call,
 // and a megamorphic call.
 //   load guarded cid            load ICData             load MegamorphicCache
 //   load monomorphic target <-> load ICLookup stub  ->  load MMLookup stub
 //   call target.entry           call stub.entry         call stub.entry
 class SwitchableCallPattern : public ValueObject {
  public:
   SwitchableCallPattern(uword pc, const Code& code);
 
   RawObject* data() const;
   RawCode* target() const;
   void SetData(const Object& data) const;
   void SetTarget(const Code& target) const;
 
  private:
   const ObjectPool& object_pool_;
   intptr_t data_pool_index_;
   intptr_t target_pool_index_;
 
   DISALLOW_COPY_AND_ASSIGN(SwitchableCallPattern);
 };
 
-
 class ReturnPattern : public ValueObject {
  public:
   explicit ReturnPattern(uword pc);
 
   static const int kLengthInBytes = 0;
 
   int pattern_length_in_bytes() const {
     UNIMPLEMENTED();
     return kLengthInBytes;
   }
 
   bool IsValid() const;
 
  private:
   const uword pc_;
 };
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_INSTRUCTIONS_DBC_H_