Ship ES2015 sloppy-mode const semantics

test/cctest/test-parsing.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 3553 matching lines @@
   CompileRun("\"use asm\";\n"
              "var foo = 1;\n"
              "\"use asm\";\n"  // Only the first one counts.
              "function bar() { \"use asm\"; var baz = 1; }");
   // Optimizing will double-count because the source is parsed twice.
   CHECK_EQ(i::FLAG_always_opt ? 4 : 2, use_counts[v8::Isolate::kUseAsm]);
 }
 
 
 TEST(UseConstLegacyCount) {
+  i::FLAG_legacy_const = true;
   i::Isolate* isolate = CcTest::i_isolate();
   i::HandleScope scope(isolate);
   LocalContext env;
   int use_counts[v8::Isolate::kUseCounterFeatureCount] = {};
   global_use_counts = use_counts;
   CcTest::isolate()->SetUseCounterCallback(MockUseCounterCallback);
   CompileRun(
       "const x = 1;\n"
       "var foo = 1;\n"
       "const y = 1;\n"
@@ skipping 2834 matching lines @@
       "((a)/*\n*/=> a)(1)",
       "((a, b)\n=> a + b)(1, 2)",
       "((a, b)/*\n*/=> a + b)(1, 2)",
       NULL};
   RunParserSyncTest(context_data, data, kError);
 }
 
 
 TEST(StrongModeFreeVariablesDeclaredByPreviousScript) {
   i::FLAG_strong_mode = true;
+  i::FLAG_legacy_const = true;
   v8::V8::Initialize();
   v8::HandleScope scope(CcTest::isolate());
   v8::Context::Scope context_scope(v8::Context::New(CcTest::isolate()));
   v8::TryCatch try_catch(CcTest::isolate());
 
   // Introduce a bunch of variables, in all language modes.
   const char* script1 =
       "var my_var1 = 0;        \n"
       "function my_func1() { } \n"
       "const my_const1 = 0;    \n";
@@ skipping 1332 matching lines @@
 }
 
 
 TEST(MiscSyntaxErrors) {
   const char* context_data[][2] = {
       {"'use strict'", ""}, {"", ""}, {NULL, NULL}};
   const char* error_data[] = {"for (();;) {}", NULL};
 
   RunParserSyncTest(context_data, error_data, kError, NULL, 0, NULL, 0);
 }