Revert of Make full GC reduce memory footprint an explicit event in the idle notification handler.

test/unittests/heap/gc-idle-time-handler-unittest.cc

Index: test/unittests/heap/gc-idle-time-handler-unittest.cc
diff --git a/test/unittests/heap/gc-idle-time-handler-unittest.cc b/test/unittests/heap/gc-idle-time-handler-unittest.cc
index bac74be27509032bab4f66ace37db2e0dec3e034..868262bcb38152d4bdffbf84f83dbe820ce2a926 100644
--- a/test/unittests/heap/gc-idle-time-handler-unittest.cc
+++ b/test/unittests/heap/gc-idle-time-handler-unittest.cc
@@ -516,18 +516,5 @@
   EXPECT_EQ(DONE, action.type);
 }
 
-
-TEST_F(GCIdleTimeHandlerTest, ReduceMemory) {
-  GCIdleTimeHandler::HeapState heap_state = DefaultHeapState();
-  double idle_time = GCIdleTimeHandler::kMinTimeForReduceMemory;
-  for (int i = 0; i < GCIdleTimeHandler::kMaxMarkCompactsInIdleRound; i++) {
-    GCIdleTimeAction action = handler()->Compute(idle_time, heap_state);
-    EXPECT_EQ(DO_FULL_GC_COMPACT, action.type);
-    handler()->NotifyIdleMarkCompact();
-  }
-  GCIdleTimeAction action = handler()->Compute(idle_time, heap_state);
-  EXPECT_EQ(DONE, action.type);
-}
-
 }  // namespace internal
 }  // namespace v8