Introduce LanguageMode, drop StrictMode.

src/compilation-cache.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_COMPILATION_CACHE_H_
 #define V8_COMPILATION_CACHE_H_
 
 namespace v8 {
 namespace internal {
 
@@ skipping 91 matching lines @@
 //    More specifically these are the CompileString, DebugEvaluate and
 //    DebugEvaluateGlobal runtime functions.
 // 4. The start position of the calling scope.
 class CompilationCacheEval: public CompilationSubCache {
  public:
   CompilationCacheEval(Isolate* isolate, int generations)
       : CompilationSubCache(isolate, generations) { }
 
   MaybeHandle<SharedFunctionInfo> Lookup(Handle<String> source,
                                          Handle<SharedFunctionInfo> outer_info,
-                                         StrictMode strict_mode,
+                                         LanguageMode language_mode,
                                          int scope_position);
 
   void Put(Handle<String> source, Handle<SharedFunctionInfo> outer_info,
            Handle<SharedFunctionInfo> function_info, int scope_position);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(CompilationCacheEval);
 };
 
 
@@ skipping 25 matching lines @@
   MaybeHandle<SharedFunctionInfo> LookupScript(
       Handle<String> source, Handle<Object> name, int line_offset,
       int column_offset, bool is_embedder_debug_script,
       bool is_shared_cross_origin, Handle<Context> context);
 
   // Finds the shared function info for a source string for eval in a
   // given context.  Returns an empty handle if the cache doesn't
   // contain a script for the given source string.
   MaybeHandle<SharedFunctionInfo> LookupEval(
       Handle<String> source, Handle<SharedFunctionInfo> outer_info,
-      Handle<Context> context, StrictMode strict_mode, int scope_position);
+      Handle<Context> context, LanguageMode language_mode, int scope_position);
 
   // Returns the regexp data associated with the given regexp if it
   // is in cache, otherwise an empty handle.
   MaybeHandle<FixedArray> LookupRegExp(
       Handle<String> source, JSRegExp::Flags flags);
 
   // Associate the (source, kind) pair to the shared function
   // info. This may overwrite an existing mapping.
   void PutScript(Handle<String> source,
                  Handle<Context> context,
@@ skipping 57 matching lines @@
 
   friend class Isolate;
 
   DISALLOW_COPY_AND_ASSIGN(CompilationCache);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_COMPILATION_CACHE_H_