Introduce LanguageMode, drop StrictMode.

src/hydrogen.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_HYDROGEN_H_
 #define V8_HYDROGEN_H_
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
@@ skipping 2171 matching lines @@
   }
   HBasicBlock* function_return() const {
     return function_state()->function_return();
   }
   TestContext* inlined_test_context() const {
     return function_state()->test_context();
   }
   void ClearInlinedTestContext() {
     function_state()->ClearInlinedTestContext();
   }
-  StrictMode function_strict_mode() {
-    return function_state()->compilation_info()->strict_mode();
+  LanguageMode function_language_mode() {
+    return function_state()->compilation_info()->language_mode();
   }
 
   // Generators for inline runtime functions.
 #define INLINE_FUNCTION_GENERATOR_DECLARATION(Name, argc, ressize)      \
   void Generate##Name(CallRuntime* call);
 
   INLINE_FUNCTION_LIST(INLINE_FUNCTION_GENERATOR_DECLARATION)
   INLINE_OPTIMIZED_FUNCTION_LIST(INLINE_FUNCTION_GENERATOR_DECLARATION)
 #undef INLINE_FUNCTION_GENERATOR_DECLARATION
 
@@ skipping 745 matching lines @@
   }
 
  private:
   HGraphBuilder* builder_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_H_