[heap] Introduce enum of garbage collection reasons.

test/cctest/test-accessors.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 301 matching lines @@
   CHECK(info.This() == info.Holder());
   CHECK(info.Data()
             ->Equals(info.GetIsolate()->GetCurrentContext(), v8_str("data"))
             .FromJust());
   ApiTestFuzzer::Fuzz();
   CHECK(info.GetIsolate() == CcTest::isolate());
   CHECK(info.This() == info.Holder());
   CHECK(info.Data()
             ->Equals(info.GetIsolate()->GetCurrentContext(), v8_str("data"))
             .FromJust());
-  CcTest::heap()->CollectAllGarbage();
+  CcTest::CollectAllGarbage(i::Heap::kFinalizeIncrementalMarkingMask);
   CHECK(info.GetIsolate() == CcTest::isolate());
   CHECK(info.This() == info.Holder());
   CHECK(info.Data()
             ->Equals(info.GetIsolate()->GetCurrentContext(), v8_str("data"))
             .FromJust());
   info.GetReturnValue().Set(17);
 }
 
 
 THREADED_TEST(DirectCall) {
@@ skipping 459 matching lines @@
             ->Set(env.local(), v8_str("Fun"),
                   fun_templ->GetFunction(env.local()).ToLocalChecked())
             .FromJust());
 
   CompileRun(
       "var f = new Fun();"
       "Number.prototype.__proto__ = f;"
       "var a = 42;"
       "for (var i = 0; i<3; i++) { a.foo; }");
 }