Remove CompilationInfoWithZone from public API.

src/compiler.h

 // Copyright 2012 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_H_
 #define V8_COMPILER_H_
 
 #include "src/allocation.h"
 #include "src/ast.h"
 #include "src/bailout-reason.h"
@@ skipping 470 matching lines @@
   // This flag is used by the main thread to track whether this compilation
   // should be abandoned due to dependency change.
   bool aborted_due_to_dependency_change_;
 
   int osr_expr_stack_height_;
 
   DISALLOW_COPY_AND_ASSIGN(CompilationInfo);
 };
 
 
-// Exactly like a CompilationInfo, except also creates and enters a
-// Zone on construction and deallocates it on exit.
-class CompilationInfoWithZone: public CompilationInfo {
- public:
-  explicit CompilationInfoWithZone(Handle<Script> script);
-  explicit CompilationInfoWithZone(Handle<JSFunction> closure);
-
-  // Virtual destructor because a CompilationInfoWithZone has to exit the
-  // zone scope and get rid of dependent maps even when the destructor is
-  // called when cast as a CompilationInfo.
-  virtual ~CompilationInfoWithZone();
-
- private:
-  Zone zone_;
-};
-
 // A wrapper around a CompilationInfo that detaches the Handles from
 // the underlying DeferredHandleScope and stores them in info_ on
 // destruction.
 class CompilationHandleScope BASE_EMBEDDED {
  public:
   explicit CompilationHandleScope(CompilationInfo* info)
       : deferred_(info->isolate()), info_(info) {}
   ~CompilationHandleScope() {
     info_->set_deferred_handles(deferred_.Detach());
   }
@@ skipping 186 matching lines @@
   Zone zone_;
   size_t info_zone_start_allocation_size_;
   base::ElapsedTimer timer_;
 
   DISALLOW_COPY_AND_ASSIGN(CompilationPhase);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_COMPILER_H_