DO NOT MERGE: Fix top_controls_manager to stay hidden

cc/input/top_controls_manager_unittest.cc

Index: cc/input/top_controls_manager_unittest.cc
diff --git a/cc/input/top_controls_manager_unittest.cc b/cc/input/top_controls_manager_unittest.cc
index 0be40ca581a4c9b6d97efa0440631e0754b0f2db..585d09b95d6589e64c23ddc47d8ee33b4b28273e 100644
--- a/cc/input/top_controls_manager_unittest.cc
+++ b/cc/input/top_controls_manager_unittest.cc
@@ -420,6 +420,24 @@ TEST(TopControlsManagerTest, ShrinkingHeightKeepsTopControlsHidden) {
   EXPECT_EQ(0.f, manager->ContentTopOffset());
 }
 
+TEST(TopControlsManagerTest, GrowingHeightKeepsTopControlsHidden) {
+  MockTopControlsManagerClient client(0.f, 0.5f, 0.5f);
+  TopControlsManager* manager = client.manager();
+  manager->UpdateTopControlsState(HIDDEN, HIDDEN, false);
+  EXPECT_EQ(0.f, manager->ControlsTopOffset());
+  EXPECT_EQ(0.f, manager->ContentTopOffset());
+
+  manager->SetTopControlsHeight(50.f);
+  EXPECT_FALSE(manager->animation());
+  EXPECT_EQ(-50.f, manager->ControlsTopOffset());
+  EXPECT_EQ(0.f, manager->ContentTopOffset());
+
+  manager->SetTopControlsHeight(100.f);
+  EXPECT_FALSE(manager->animation());
+  EXPECT_EQ(-100.f, manager->ControlsTopOffset());
+  EXPECT_EQ(0.f, manager->ContentTopOffset());
+}
+
 TEST(TopControlsManagerTest, HiddenTopControlsReadjustOnIncreasedHeight) {
   MockTopControlsManagerClient client(10.f, 0.5f, 0.5f);
   TopControlsManager* manager = client.manager();