Finalize sweeping in idle notification when all pages are swept.

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 b5f59bd5108f1792c24a70ece5499d97f3954c8d..76424627c5572e2eeb114de7e589801c102de5c3 100644
--- a/test/unittests/heap/gc-idle-time-handler-unittest.cc
+++ b/test/unittests/heap/gc-idle-time-handler-unittest.cc
@@ -27,6 +27,7 @@ class GCIdleTimeHandlerTest : public ::testing::Test {
     result.incremental_marking_stopped = false;
     result.can_start_incremental_marking = true;
     result.sweeping_in_progress = false;
+    result.sweeping_completed = false;
     result.mark_compact_speed_in_bytes_per_ms = kMarkCompactSpeed;
     result.incremental_marking_speed_in_bytes_per_ms = kMarkingSpeed;
     result.scavenge_speed_in_bytes_per_ms = kScavengeSpeed;
@@ -303,6 +304,30 @@ TEST_F(GCIdleTimeHandlerTest, NotEnoughTime) {
 }
 
 
+TEST_F(GCIdleTimeHandlerTest, FinalizeSweeping) {
+  GCIdleTimeHandler::HeapState heap_state = DefaultHeapState();
+  heap_state.incremental_marking_stopped = true;
+  heap_state.can_start_incremental_marking = false;
+  heap_state.sweeping_in_progress = true;
+  heap_state.sweeping_completed = true;
+  double idle_time_ms = 10.0;
+  GCIdleTimeAction action = handler()->Compute(idle_time_ms, heap_state);
+  EXPECT_EQ(DO_FINALIZE_SWEEPING, action.type);
+}
+
+
+TEST_F(GCIdleTimeHandlerTest, CannotFinalizeSweeping) {
+  GCIdleTimeHandler::HeapState heap_state = DefaultHeapState();
+  heap_state.incremental_marking_stopped = true;
+  heap_state.can_start_incremental_marking = false;
+  heap_state.sweeping_in_progress = true;
+  heap_state.sweeping_completed = false;
+  double idle_time_ms = 10.0;
+  GCIdleTimeAction action = handler()->Compute(idle_time_ms, heap_state);
+  EXPECT_EQ(DO_NOTHING, action.type);
+}
+
+
 TEST_F(GCIdleTimeHandlerTest, StopEventually1) {
   GCIdleTimeHandler::HeapState heap_state = DefaultHeapState();
   heap_state.incremental_marking_stopped = true;