[turbofan] Cleanup use of virtual, OVERRIDE, FINAL.

src/compiler/control-builders.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_COMPILER_CONTROL_BUILDERS_H_
 #define V8_COMPILER_CONTROL_BUILDERS_H_
 
 #include "src/v8.h"
 
 #include "src/compiler/graph-builder.h"
@@ skipping 22 matching lines @@
 
   Zone* zone() const { return builder_->local_zone(); }
   Environment* environment() { return builder_->environment(); }
   void set_environment(Environment* env) { builder_->set_environment(env); }
 
   Builder* builder_;
 };
 
 
 // Tracks control flow for a conditional statement.
-class IfBuilder : public ControlBuilder {
+class IfBuilder FINAL : public ControlBuilder {
  public:
   explicit IfBuilder(StructuredGraphBuilder* builder)
       : ControlBuilder(builder),
         then_environment_(NULL),
         else_environment_(NULL) {}
 
   // Primitive control commands.
   void If(Node* condition, BranchHint hint = BranchHint::kNone);
   void Then();
   void Else();
   void End();
 
  private:
   Environment* then_environment_;  // Environment after the 'then' body.
   Environment* else_environment_;  // Environment for the 'else' body.
 };
 
 
 // Tracks control flow for an iteration statement.
-class LoopBuilder : public ControlBuilder {
+class LoopBuilder FINAL : public ControlBuilder {
  public:
   explicit LoopBuilder(StructuredGraphBuilder* builder)
       : ControlBuilder(builder),
         loop_environment_(NULL),
         continue_environment_(NULL),
         break_environment_(NULL) {}
 
   // Primitive control commands.
   void BeginLoop(BitVector* assigned);
   void EndBody();
   void EndLoop();
 
   // Primitive support for break and continue.
-  virtual void Continue();
-  virtual void Break();
+  void Continue() FINAL;
+  void Break() FINAL;
 
   // Compound control command for conditional break.
   void BreakUnless(Node* condition);
 
  private:
   Environment* loop_environment_;      // Environment of the loop header.
   Environment* continue_environment_;  // Environment after the loop body.
   Environment* break_environment_;     // Environment after the loop exits.
 };
 
 
 // Tracks control flow for a switch statement.
-class SwitchBuilder : public ControlBuilder {
+class SwitchBuilder FINAL : public ControlBuilder {
  public:
   explicit SwitchBuilder(StructuredGraphBuilder* builder, int case_count)
       : ControlBuilder(builder),
         body_environment_(NULL),
         label_environment_(NULL),
         break_environment_(NULL),
         body_environments_(case_count, zone()) {}
 
   // Primitive control commands.
   void BeginSwitch();
   void BeginLabel(int index, Node* condition);
   void EndLabel();
   void DefaultAt(int index);
   void BeginCase(int index);
   void EndCase();
   void EndSwitch();
 
   // Primitive support for break.
-  virtual void Break();
+  void Break() FINAL;
 
   // The number of cases within a switch is statically known.
   size_t case_count() const { return body_environments_.size(); }
 
  private:
   Environment* body_environment_;   // Environment after last case body.
   Environment* label_environment_;  // Environment for next label condition.
   Environment* break_environment_;  // Environment after the switch exits.
   ZoneVector<Environment*> body_environments_;
 };
 
 
 // Tracks control flow for a block statement.
-class BlockBuilder : public ControlBuilder {
+class BlockBuilder FINAL : public ControlBuilder {
  public:
   explicit BlockBuilder(StructuredGraphBuilder* builder)
       : ControlBuilder(builder), break_environment_(NULL) {}
 
   // Primitive control commands.
   void BeginBlock();
   void EndBlock();
 
   // Primitive support for break.
-  virtual void Break();
+  void Break() FINAL;
 
  private:
   Environment* break_environment_;  // Environment after the block exits.
 };
-}
-}
-}  // namespace v8::internal::compiler
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8
 
 #endif  // V8_COMPILER_CONTROL_BUILDERS_H_