Remove broken _WIN64 checks.

TBR=hpayer@chromium.org

Review URL: https://codereview.chromium.org/440863002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22869 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/compiler/x64/code-generator-x64.cc

@@ -16,8 +16,6 @@ namespace v8 {
 namespace internal {
 namespace compiler {
 
-#ifndef _WIN64
-
 #define __ masm()->
 
 
@@ -998,7 +996,6 @@ bool CodeGenerator::IsNopForSmiCodeInlining(Handle<Code> code, int start_pc,
 
 #endif
 
-#endif
-}
-}
-}  // namespace v8::internal::compiler
+}  // namespace internal
+}  // namespace compiler
+}  // namespace v8

src/compiler/x64/instruction-selector-x64.cc

@@ -9,8 +9,6 @@ namespace v8 {
 namespace internal {
 namespace compiler {
 
-#ifndef _WIN64
-
 // Adds X64-specific methods for generating operands.
 class X64OperandGenerator V8_FINAL : public OperandGenerator {
  public:
@@ -719,8 +717,6 @@ void InstructionSelector::VisitCall(Node* call, BasicBlock* continuation,
   }
 }
 
-#endif
-
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8