Use StrictModeFlag in preparser and preparse data.

src/v8globals.h

Index: src/v8globals.h
diff --git a/src/v8globals.h b/src/v8globals.h
index f4703ff090258a64dbc4e8cb562c0efb7df61e20..40ce30c1d550511dd6d7b4edec3ee37466ea7141 100644
--- a/src/v8globals.h
+++ b/src/v8globals.h
@@ -482,16 +482,6 @@ enum CpuFeature { SSE4_1 = 32 + 19,  // x86
                   SAHF = 0,    // x86
                   FPU = 1};    // MIPS
 
-// The Strict Mode (ECMA-262 5th edition, 4.2.2).
-enum StrictModeFlag {
-  kNonStrictMode,
-  kStrictMode,
-  // This value is never used, but is needed to prevent GCC 4.5 from failing
-  // to compile when we assert that a flag is either kNonStrictMode or
-  // kStrictMode.
-  kInvalidStrictFlag
-};
-
 
 // Used to specify if a macro instruction must perform a smi check on tagged
 // values.