Revert "Allow ICs to be generated for own global proxy."

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2343 matching lines @@
       PropertyAttributes* attributes);
   MUST_USE_RESULT MaybeObject* GetLocalPropertyPostInterceptor(
       Object* receiver,
       Name* name,
       PropertyAttributes* attributes);
 
   // Returns true if this is an instance of an api function and has
   // been modified since it was created.  May give false positives.
   bool IsDirty();
 
+  // If the receiver is a JSGlobalProxy this method will return its prototype,
+  // otherwise the result is the receiver itself.
+  inline Object* BypassGlobalProxy();
+
   // Accessors for hidden properties object.
   //
   // Hidden properties are not local properties of the object itself.
   // Instead they are stored in an auxiliary structure kept as a local
   // property with a special name Heap::hidden_string(). But if the
   // receiver is a JSGlobalProxy then the auxiliary object is a property
   // of its prototype, and if it's a detached proxy, then you can't have
   // hidden properties.
 
   // Sets a hidden property on this object. Returns this object if successful,
@@ skipping 8399 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_