Introduce extended mode.

src/compilation-cache.cc

Index: src/compilation-cache.cc
diff --git a/src/compilation-cache.cc b/src/compilation-cache.cc
index 28e833a4933e1457a5f08ac8132338aef82c7938..1c204c99997c45efb8d08c390d33166d7d5c3156 100644
--- a/src/compilation-cache.cc
+++ b/src/compilation-cache.cc
@@ -250,7 +250,7 @@ void CompilationCacheScript::Put(Handle<String> source,
 Handle<SharedFunctionInfo> CompilationCacheEval::Lookup(
     Handle<String> source,
     Handle<Context> context,
-    StrictModeFlag strict_mode) {
+    LanguageMode language_mode) {
   // Make sure not to leak the table into the surrounding handle
   // scope. Otherwise, we risk keeping old tables around even after
   // having cleared the cache.
@@ -259,7 +259,7 @@ Handle<SharedFunctionInfo> CompilationCacheEval::Lookup(
   { HandleScope scope(isolate());
     for (generation = 0; generation < generations(); generation++) {
       Handle<CompilationCacheTable> table = GetTable(generation);
-      result = table->LookupEval(*source, *context, strict_mode);
+      result = table->LookupEval(*source, *context, language_mode);
       if (result->IsSharedFunctionInfo()) {
         break;
       }
@@ -389,16 +389,16 @@ Handle<SharedFunctionInfo> CompilationCache::LookupEval(
     Handle<String> source,
     Handle<Context> context,
     bool is_global,
-    StrictModeFlag strict_mode) {
+    LanguageMode language_mode) {
   if (!IsEnabled()) {
     return Handle<SharedFunctionInfo>::null();
   }
 
   Handle<SharedFunctionInfo> result;
   if (is_global) {
-    result = eval_global_.Lookup(source, context, strict_mode);
+    result = eval_global_.Lookup(source, context, language_mode);
   } else {
-    result = eval_contextual_.Lookup(source, context, strict_mode);
+    result = eval_contextual_.Lookup(source, context, language_mode);
   }
   return result;
 }