[compiler] Remove dangerous language mode accessors.

src/crankshaft/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_CRANKSHAFT_HYDROGEN_H_
 #define V8_CRANKSHAFT_HYDROGEN_H_
 
 #include "src/accessors.h"
 #include "src/allocation.h"
 #include "src/ast/ast.h"
@@ skipping 2228 matching lines @@
   Handle<SharedFunctionInfo> current_shared_info() const {
     return current_info()->shared_info();
   }
   TypeFeedbackVector* current_feedback_vector() const {
     return current_shared_info()->feedback_vector();
   }
   void ClearInlinedTestContext() {
     function_state()->ClearInlinedTestContext();
   }
   LanguageMode function_language_mode() {
-    return function_state()->compilation_info()->language_mode();
+    return function_state()->compilation_info()->parse_info()->language_mode();
   }
 
 #define FOR_EACH_HYDROGEN_INTRINSIC(F) \
   F(IsSmi)                             \
   F(IsArray)                           \
   F(IsTypedArray)                      \
   F(IsRegExp)                          \
   F(IsJSProxy)                         \
   F(Call)                              \
   F(NewObject)                         \
@@ skipping 851 matching lines @@
   }
 
  private:
   HOptimizedGraphBuilder* builder_;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CRANKSHAFT_HYDROGEN_H_