[turbofan] Greedy allocator refactoring.

src/compiler/register-allocator.h

Index: src/compiler/register-allocator.h
diff --git a/src/compiler/register-allocator.h b/src/compiler/register-allocator.h
index 5a09c012d8234f42fb24db895130328b9be35b81..9af36c9241f3e5741b1d2ca1418bb7e6dba6da1d 100644
--- a/src/compiler/register-allocator.h
+++ b/src/compiler/register-allocator.h
@@ -770,6 +770,7 @@ class RegisterAllocator : public ZoneObject {
                                           LifetimePosition pos);
 
   const ZoneVector<LiveRange*>& GetFixedRegisters() const;
+  const char* RegisterName(int allocation_index) const;
 
  private:
   RegisterAllocationData* const data_;
@@ -789,8 +790,6 @@ class LinearScanAllocator final : public RegisterAllocator {
   void AllocateRegisters();
 
  private:
-  const char* RegisterName(int allocation_index) const;
-
   ZoneVector<LiveRange*>& unhandled_live_ranges() {
     return unhandled_live_ranges_;
   }