[strong] Remove all remainders of strong mode

test/cctest/heap/test-heap.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1554 matching lines @@
   // If we do not flush code, or have the compilation cache turned off, this
   // test is invalid.
   if (!FLAG_flush_code || !FLAG_compilation_cache) {
     return;
   }
   CcTest::InitializeVM();
   Isolate* isolate = CcTest::i_isolate();
   Factory* factory = isolate->factory();
   Heap* heap = isolate->heap();
   CompilationCache* compilation_cache = isolate->compilation_cache();
-  LanguageMode language_mode =
-      construct_language_mode(FLAG_use_strict, FLAG_use_strong);
+  LanguageMode language_mode = construct_language_mode(FLAG_use_strict);
 
   v8::HandleScope scope(CcTest::isolate());
   const char* raw_source =
       "function foo() {"
       "  var x = 42;"
       "  var y = 42;"
       "  var z = x + y;"
       "};"
       "foo()";
   Handle<String> source = factory->InternalizeUtf8String(raw_source);
@@ skipping 5016 matching lines @@
       heap->RightTrimFixedArray<Heap::CONCURRENT_TO_SWEEPER>(arrays[j], N - 1);
     }
   }
   // Force allocation from the free list.
   heap->set_force_oom(true);
   heap->CollectGarbage(OLD_SPACE);
 }
 
 }  // namespace internal
 }  // namespace v8