Move platform abstraction to base library

src/mips/regexp-macro-assembler-mips.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/v8.h"
 
 #if V8_TARGET_ARCH_MIPS
 
 #include "src/code-stubs.h"
 #include "src/log.h"
@@ skipping 1023 matching lines @@
 
 
 bool RegExpMacroAssemblerMIPS::CanReadUnaligned() {
   return false;
 }
 
 
 // Private methods:
 
 void RegExpMacroAssemblerMIPS::CallCheckStackGuardState(Register scratch) {
-  int stack_alignment = OS::ActivationFrameAlignment();
+  int stack_alignment = base::OS::ActivationFrameAlignment();
 
   // Align the stack pointer and save the original sp value on the stack.
   __ mov(scratch, sp);
   __ Subu(sp, sp, Operand(kPointerSize));
   ASSERT(IsPowerOf2(stack_alignment));
   __ And(sp, sp, Operand(-stack_alignment));
   __ sw(scratch, MemOperand(sp));
 
   __ mov(a2, frame_pointer());
   // Code* of self.
@@ skipping 262 matching lines @@
 }
 
 
 #undef __
 
 #endif  // V8_INTERPRETED_REGEXP
 
 }}  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS