Revert the change adding CompilationHandleScope.

src/compiler.h

Index: src/compiler.h
diff --git a/src/compiler.h b/src/compiler.h
index 135904860eaea42e4790182d113bcd173b29bd2c..26c0ac43c1b33d5ea25c942544cd3cbb882a0b86 100644
--- a/src/compiler.h
+++ b/src/compiler.h
@@ -45,8 +45,6 @@ class CompilationInfo BASE_EMBEDDED {
   CompilationInfo(Handle<SharedFunctionInfo> shared_info, Zone* zone);
   CompilationInfo(Handle<JSFunction> closure, Zone* zone);
 
-  ~CompilationInfo();
-
   Isolate* isolate() {
     ASSERT(Isolate::Current() == isolate_);
     return isolate_;
@@ -175,11 +173,6 @@ class CompilationInfo BASE_EMBEDDED {
   // current compilation pipeline.
   void AbortOptimization();
 
-  void set_deferred_handles(DeferredHandles* deferred_handles) {
-    ASSERT(deferred_handles_ == NULL);
-    deferred_handles_ = deferred_handles;
-  }
-
  private:
   Isolate* isolate_;
 
@@ -266,8 +259,6 @@ class CompilationInfo BASE_EMBEDDED {
   // CompilationInfo allocates.
   Zone* zone_;
 
-  DeferredHandles* deferred_handles_;
-
   DISALLOW_COPY_AND_ASSIGN(CompilationInfo);
 };
 
@@ -295,23 +286,6 @@ class CompilationInfoWithZone: public CompilationInfo {
 };
 
 
-// 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());
-  }
-
- private:
-  DeferredHandleScope deferred_;
-  CompilationInfo* info_;
-};
-
-
 // The V8 compiler
 //
 // General strategy: Source code is translated into an anonymous function w/o