Background compilation should fail gracefully for OOM during dependency registration

[rmacnak-google]

Exhausted heap space, trying to allocate 31392 bytes.
../../runtime/vm/object.cc: 2650: error: Out of memory.
version=2.10.0-edge.1a829bbde0697b8494c1d1a86753d2291d07d07d (be) (Sun Jul 26 22:27:39 2020 +0000) on "linux_x64"
pid=15803, thread=15805, isolate_group=main(0x55692cd54580), isolate=main(0x55692cd42900)
isolate_instructions=55692a475700, vm_instructions=55692a475700
  pc 0x000055692a7044fc fp 0x00007fefc17fe060 dart::Profiler::DumpStackTrace(void*)+0x7c
  pc 0x000055692a475832 fp 0x00007fefc17fe140 dart::Assert::Fail(char const*, ...)+0x82
  pc 0x000055692a68522e fp 0x00007fefc17fe190 dart::Object::Allocate(long, long, dart::Heap::Space)+0x22e
  pc 0x000055692a696819 fp 0x00007fefc17fe1e0 dart::Array::Grow(dart::Array const&, long, dart::Heap::Space)+0x69
  pc 0x000055692a7bf792 fp 0x00007fefc17fe220 dart::WeakCodeReferences::Register(dart::Code const&)+0xc2
  pc 0x000055692a69b4a4 fp 0x00007fefc17fe260 dart::Class::RegisterCHACode(dart::Code const&)+0x44
  pc 0x000055692aafea10 fp 0x00007fefc17fe290 dart::CHA::RegisterDependencies(dart::Code const&) const+0x30
  pc 0x000055692a79d6a7 fp 0x00007fefc17fe2f0 dart::CompileParsedFunctionHelper::FinalizeCompilation(dart::compiler::Assembler*, dart::FlowGraphCompiler*, dart::FlowGraph*)+0x477
  pc 0x000055692a7a05d1 fp 0x00007fefc17fe310 /b/s/w/ir/out/ReleaseX64/dart+0x1c465d1
  pc 0x000055692a653407 fp 0x00007fefc17fe390 dart::IsolateGroup::RunWithStoppedMutators(std::__2::function<void ()>, std::__2::function<void ()>, bool)+0x1e7
  pc 0x000055692a79e1ce fp 0x00007fefc17fea60 dart::CompileParsedFunctionHelper::Compile(dart::CompilationPipeline*)+0x9ae
  pc 0x000055692a79ed6f fp 0x00007fefc17fec50 /b/s/w/ir/out/ReleaseX64/dart+0x1c44d6f
  pc 0x000055692a79ffac fp 0x00007fefc17fed60 dart::BackgroundCompiler::Run()+0x31c
  pc 0x000055692a78a248 fp 0x00007fefc17fede0 dart::ThreadPool::WorkerLoop(dart::ThreadPool::Worker*)+0x148
  pc 0x000055692a78a71c fp 0x00007fefc17fee10 dart::ThreadPool::Worker::Main(unsigned long)+0x5c
  pc 0x000055692a7006ed fp 0x00007fefc17feed0 /b/s/w/ir/out/ReleaseX64/dart+0x1ba66ed
-- End of DumpStackTrace

https://logs.chromium.org/logs/dart/buildbucket/cr-buildbucket.appspot.com/8873651942489831056/+/steps/make_a_fuzz_shard_20/0/logs/task_stdout_stderr:_make_a_fuzz_shard_20/0