MIPS: Introduce LanguageMode, drop StrictMode.

src/ic/mips64/ic-mips64.cc

Index: src/ic/mips64/ic-mips64.cc
diff --git a/src/ic/mips64/ic-mips64.cc b/src/ic/mips64/ic-mips64.cc
index aec4299511424e2fca0a27d23ff4b4ed3684cc66..7b22b8c3e2877e70761c4865efd48ab1ffe7b7d0 100644
--- a/src/ic/mips64/ic-mips64.cc
+++ b/src/ic/mips64/ic-mips64.cc
@@ -726,7 +726,7 @@ static void KeyedStoreGenerateMegamorphicHelper(
 
 
 void KeyedStoreIC::GenerateMegamorphic(MacroAssembler* masm,
-                                       StrictMode strict_mode) {
+                                       LanguageMode language_mode) {
   // ---------- S t a t e --------------
   //  -- a0     : value
   //  -- a1     : key
@@ -777,7 +777,7 @@ void KeyedStoreIC::GenerateMegamorphic(MacroAssembler* masm,
   // a0: value.
   // a1: key.
   // a2: receiver.
-  PropertyICCompiler::GenerateRuntimeSetProperty(masm, strict_mode);
+  PropertyICCompiler::GenerateRuntimeSetProperty(masm, language_mode);
   // Never returns to here.
 
   __ bind(&maybe_name_key);