Reland Force full GCwhenever CollectAllGarbage is meant to trigger a full GC.

test/cctest/test-cpu-profiler.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 1160 matching lines @@
 //     5     5      call [-1] #6
 //    71    70    start [-1] #3
 //     1     1      bar [-1] #7
 //    19    19    (program) [-1] #2
 TEST(FunctionCallSample) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
 
   // Collect garbage that might have be generated while installing
   // extensions.
-  CcTest::heap()->CollectAllGarbage(Heap::kNoGCFlags);
+  CcTest::heap()->CollectAllGarbage();
 
   CompileRun(call_function_test_source);
   v8::Local<v8::Function> function = GetFunction(*env, "start");
 
   int32_t duration_ms = 100;
   v8::Handle<v8::Value> args[] = {
     v8::Integer::New(env->GetIsolate(), duration_ms)
   };
   v8::CpuProfile* profile =
       RunProfiler(env.local(), function, args, arraysize(args), 100);
@@ skipping 836 matching lines @@
   iprofile->Print();
   v8::CpuProfile* profile = reinterpret_cast<v8::CpuProfile*>(iprofile);
 
   const char* branch[] = {"", "test"};
   const ProfileNode* itest_node =
       GetSimpleBranch(profile, branch, arraysize(branch));
   CHECK_EQ(0U, itest_node->deopt_infos().size());
 
   iprofiler->DeleteProfile(iprofile);
 }