MIPS: Introduce LanguageMode, drop StrictMode.

src/mips/lithium-mips.h

Index: src/mips/lithium-mips.h
diff --git a/src/mips/lithium-mips.h b/src/mips/lithium-mips.h
index 5a9e39cd0c3483ccc042bbf0ce7dc4fe0d1315e5..1ccba14bc8287844f3fe94edfe56a99a252ecc8f 100644
--- a/src/mips/lithium-mips.h
+++ b/src/mips/lithium-mips.h
@@ -2194,7 +2194,7 @@ class LStoreNamedGeneric FINAL : public LTemplateInstruction<0, 3, 0> {
   void PrintDataTo(StringStream* stream) OVERRIDE;
 
   Handle<Object> name() const { return hydrogen()->name(); }
-  StrictMode strict_mode() { return hydrogen()->strict_mode(); }
+  LanguageMode language_mode() { return hydrogen()->language_mode(); }
 };
 
 
@@ -2251,7 +2251,7 @@ class LStoreKeyedGeneric FINAL : public LTemplateInstruction<0, 4, 0> {
 
   void PrintDataTo(StringStream* stream) OVERRIDE;
 
-  StrictMode strict_mode() { return hydrogen()->strict_mode(); }
+  LanguageMode language_mode() { return hydrogen()->language_mode(); }
 };