Handlify all context allocators from the Heap.

src/heap.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 995 matching lines @@
   // Please note this does not perform a garbage collection.
   MUST_USE_RESULT MaybeObject* AllocateFixedDoubleArrayWithHoles(
       int length,
       PretenureFlag pretenure = NOT_TENURED);
 
   // AllocateHashTable is identical to AllocateFixedArray except
   // that the resulting object has hash_table_map as map.
   MUST_USE_RESULT MaybeObject* AllocateHashTable(
       int length, PretenureFlag pretenure = NOT_TENURED);
 
-  // Allocate a global context.
-  MUST_USE_RESULT MaybeObject* AllocateGlobalContext(JSFunction* function,
-                                                     ScopeInfo* scope_info);
-
-  // Allocate a function context.
-  MUST_USE_RESULT MaybeObject* AllocateFunctionContext(int length,
-                                                       JSFunction* function);
-
-  // Allocate a catch context.
-  MUST_USE_RESULT MaybeObject* AllocateCatchContext(JSFunction* function,
-                                                    Context* previous,
-                                                    String* name,
-                                                    Object* thrown_object);
-  // Allocate a 'with' context.
-  MUST_USE_RESULT MaybeObject* AllocateWithContext(JSFunction* function,
-                                                   Context* previous,
-                                                   JSReceiver* extension);
-
-  // Allocate a block context.
-  MUST_USE_RESULT MaybeObject* AllocateBlockContext(JSFunction* function,
-                                                    Context* previous,
-                                                    ScopeInfo* info);
-
   // Allocates a new utility object in the old generation.
   MUST_USE_RESULT MaybeObject* AllocateStruct(InstanceType type);
 
   // Allocates a function initialized with a shared part.
   // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation
   // failed.
   // Please note this does not perform a garbage collection.
   MUST_USE_RESULT MaybeObject* AllocateFunction(
       Map* function_map,
       SharedFunctionInfo* shared,
@@ skipping 2035 matching lines @@
   DisallowHeapAllocation no_allocation;  // i.e. no gc allowed.
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_H_