Remove unused is_class_scope bit from Scope and ScopeInfo

src/objects.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_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/allocation.h"
@@ skipping 4011 matching lines @@
   // slot index if the function name is present and context-allocated (named
   // function expressions, only), otherwise returns a value < 0. The name
   // must be an internalized string.
   int FunctionContextSlotIndex(String* name, VariableMode* mode);
 
   // Lookup support for serialized scope info.  Returns the receiver context
   // slot index if scope has a "this" binding, and the binding is
   // context-allocated.  Otherwise returns a value < 0.
   int ReceiverContextSlotIndex();
 
-  bool block_scope_is_class_scope();
   FunctionKind function_kind();
 
   // Copies all the context locals into an object used to materialize a scope.
   static void CopyContextLocalsToScopeObject(Handle<ScopeInfo> scope_info,
                                              Handle<Context> context,
                                              Handle<JSObject> scope_object);
 
 
   static Handle<ScopeInfo> Create(Isolate* isolate, Zone* zone, Scope* scope);
   static Handle<ScopeInfo> CreateGlobalThisBinding(Isolate* isolate);
@@ skipping 107 matching lines @@
   class FunctionVariableField
       : public BitField<VariableAllocationInfo, ReceiverVariableField::kNext,
                         2> {};
   class FunctionVariableMode
       : public BitField<VariableMode, FunctionVariableField::kNext, 3> {};
   class AsmModuleField : public BitField<bool, FunctionVariableMode::kNext, 1> {
   };
   class AsmFunctionField : public BitField<bool, AsmModuleField::kNext, 1> {};
   class IsSimpleParameterListField
       : public BitField<bool, AsmFunctionField::kNext, 1> {};
-  class BlockScopeIsClassScopeField
-      : public BitField<bool, IsSimpleParameterListField::kNext, 1> {};
   class FunctionKindField
-      : public BitField<FunctionKind, BlockScopeIsClassScopeField::kNext, 8> {};
+      : public BitField<FunctionKind, IsSimpleParameterListField::kNext, 8> {};
 
   // BitFields representing the encoded information for context locals in the
   // ContextLocalInfoEntries part.
   class ContextLocalMode:      public BitField<VariableMode,         0, 3> {};
   class ContextLocalInitFlag:  public BitField<InitializationFlag,   3, 1> {};
   class ContextLocalMaybeAssignedFlag
       : public BitField<MaybeAssignedFlag, 4, 1> {};
 };
 
 
@@ skipping 6649 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_