Fix missing includes.

TBR=kmillikin@chromium.org, 
Review URL: http://codereview.chromium.org/650025

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3909 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/ia32/fast-codegen-ia32.h

@@ -28,6 +28,11 @@
 #ifndef V8_FAST_CODEGEN_IA32_H_
 #define V8_FAST_CODEGEN_IA32_H_
 
+#include "v8.h"
+
+#include "ast.h"
+#include "compiler.h"
+
 namespace v8 {
 namespace internal {