Introduce LiteralsArray to hide it's implementation.

src/arm/lithium-codegen-arm.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/arm/lithium-codegen-arm.h"
 #include "src/arm/lithium-gap-resolver-arm.h"
 #include "src/base/bits.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/cpu-profiler.h"
@@ skipping 5380 matching lines @@
 
 void LCodeGen::DoRegExpLiteral(LRegExpLiteral* instr) {
   DCHECK(ToRegister(instr->context()).is(cp));
   Label materialized;
   // Registers will be used as follows:
   // r6 = literals array.
   // r1 = regexp literal.
   // r0 = regexp literal clone.
   // r2-5 are used as temporaries.
   int literal_offset =
-      FixedArray::OffsetOfElementAt(instr->hydrogen()->literal_index());
+      LiteralsArray::OffsetOfLiteralAt(instr->hydrogen()->literal_index());
   __ Move(r6, instr->hydrogen()->literals());
   __ ldr(r1, FieldMemOperand(r6, literal_offset));
   __ LoadRoot(ip, Heap::kUndefinedValueRootIndex);
   __ cmp(r1, ip);
   __ b(ne, &materialized);
 
   // Create regexp literal using runtime function
   // Result will be in r0.
   __ mov(r5, Operand(Smi::FromInt(instr->hydrogen()->literal_index())));
   __ mov(r4, Operand(instr->hydrogen()->pattern()));
@@ skipping 430 matching lines @@
   __ push(ToRegister(instr->function()));
   CallRuntime(Runtime::kPushBlockContext, 2, instr);
   RecordSafepoint(Safepoint::kNoLazyDeopt);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8