Revert of [debugger] remove debugger statement support from FCG/CS.

test/cctest/test-profile-generator.cc

 // Copyright 2010 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 679 matching lines @@
   CHECK_EQ(is_lazy ? 0 : 4,
            GetFunctionLineNumber(profiler, env, "lazy_func_at_forth_line"));
   CHECK_EQ(2, GetFunctionLineNumber(profiler, env, "bar_at_the_second_line"));
   CHECK_EQ(is_lazy ? 0 : 6,
            GetFunctionLineNumber(profiler, env, "lazy_func_at_6th_line"));
 
   profiler.StopProfiling("LineNumber");
 }
 
 TEST(BailoutReason) {
-  i::FLAG_allow_natives_syntax = true;
-  i::FLAG_always_opt = false;
   v8::HandleScope scope(CcTest::isolate());
   v8::Local<v8::Context> env = CcTest::NewContext(PROFILER_EXTENSION);
   v8::Context::Scope context_scope(env);
   std::unique_ptr<CpuProfiler> iprofiler(new CpuProfiler(CcTest::i_isolate()));
   i::ProfilerExtension::set_profiler(iprofiler.get());
 
   CHECK_EQ(0, iprofiler->GetProfilesCount());
-  v8::Local<v8::Function> function = CompileRun(
-                                         "function Debugger() {\n"
-                                         "  startProfiling();\n"
-                                         "}"
-                                         "Debugger")
-                                         .As<v8::Function>();
-  i::Handle<i::JSFunction> i_function =
-      i::Handle<i::JSFunction>::cast(v8::Utils::OpenHandle(*function));
-  // Set a high opt count to trigger bail out.
-  i_function->shared()->set_opt_count(10000);
-
-  CompileRun(
-      "%OptimizeFunctionOnNextCall(Debugger);"
-      "Debugger();"
-      "stopProfiling()");
+  v8::Local<v8::Script> script =
+      v8_compile(v8_str("function Debugger() {\n"
+                        "  debugger;\n"
+                        "  startProfiling();\n"
+                        "}\n"
+                        "Debugger();\n"
+                        "stopProfiling();"));
+  script->Run(v8::Isolate::GetCurrent()->GetCurrentContext()).ToLocalChecked();
   CHECK_EQ(1, iprofiler->GetProfilesCount());
   const v8::CpuProfile* profile = i::ProfilerExtension::last_profile;
   CHECK(profile);
   const v8::CpuProfileNode* current = profile->GetTopDownRoot();
   reinterpret_cast<ProfileNode*>(
       const_cast<v8::CpuProfileNode*>(current))->Print(0);
   // The tree should look like this:
   //  (root)
   //   ""
-  //     kFunctionBeingDebugged
+  //     kDebuggerStatement
   current = PickChild(current, "");
   CHECK(const_cast<v8::CpuProfileNode*>(current));
 
   current = PickChild(current, "Debugger");
   CHECK(const_cast<v8::CpuProfileNode*>(current));
-  CHECK(!strcmp("Deoptimized too many times", current->GetBailoutReason()));
+  CHECK(!strcmp("DebuggerStatement", current->GetBailoutReason()));
 }