[heap] Remove obsolete DisallowAllocationFailure scope.

src/isolate.cc

 // 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.
 
 #include "src/isolate.h"
 
 #include <stdlib.h>
 
 #include <fstream>  // NOLINT(readability/streams)
 #include <sstream>
@@ skipping 2051 matching lines @@
 
   if (function_entry_hook() != NULL) {
     // When function entry hooking is in effect, we have to create the code
     // stubs from scratch to get entry hooks, rather than loading the previously
     // generated stubs from disk.
     // If this assert fires, the initialization path has regressed.
     DCHECK(des == NULL);
   }
 
   // The initialization process does not handle memory exhaustion.
-  DisallowAllocationFailure disallow_allocation_failure(this);
+  AlwaysAllocateScope always_allocate(this);
 
   memory_allocator_ = new MemoryAllocator(this);
   code_range_ = new CodeRange(this);
 
   // Safe after setting Heap::isolate_, and initializing StackGuard
   heap_.SetStackLimits();
 
 #define ASSIGN_ELEMENT(CamelName, hacker_name)                  \
   isolate_addresses_[Isolate::k##CamelName##Address] =          \
       reinterpret_cast<Address>(hacker_name##_address());
@@ skipping 734 matching lines @@
   // Then check whether this scope intercepts.
   if ((flag & intercept_mask_)) {
     intercepted_flags_ |= flag;
     return true;
   }
   return false;
 }
 
 }  // namespace internal
 }  // namespace v8