X87: Introduce LanguageMode, drop StrictMode.

src/ic/x87/ic-x87.cc

Index: src/ic/x87/ic-x87.cc
diff --git a/src/ic/x87/ic-x87.cc b/src/ic/x87/ic-x87.cc
index 67cc7142e8bf57ad4f647131f10e2ef9cd39acdc..92005bd097fb9515fb0e879c429f9eba052a4bc5 100644
--- a/src/ic/x87/ic-x87.cc
+++ b/src/ic/x87/ic-x87.cc
@@ -612,7 +612,7 @@ static void KeyedStoreGenerateMegamorphicHelper(
 
 
 void KeyedStoreIC::GenerateMegamorphic(MacroAssembler* masm,
-                                       StrictMode strict_mode) {
+                                       LanguageMode language_mode) {
   // Return address is on the stack.
   Label slow, fast_object, fast_object_grow;
   Label fast_double, fast_double_grow;
@@ -649,7 +649,7 @@ void KeyedStoreIC::GenerateMegamorphic(MacroAssembler* masm,
 
   // Slow case: call runtime.
   __ bind(&slow);
-  PropertyICCompiler::GenerateRuntimeSetProperty(masm, strict_mode);
+  PropertyICCompiler::GenerateRuntimeSetProperty(masm, language_mode);
   // Never returns to here.
 
   __ bind(&maybe_name_key);