ash/immersive mode: Hide the launcher when entering immersive mode

ash/wm/workspace/workspace_manager_unittest.cc

Index: ash/wm/workspace/workspace_manager_unittest.cc
diff --git a/ash/wm/workspace/workspace_manager_unittest.cc b/ash/wm/workspace/workspace_manager_unittest.cc
index 1ce1abf1e39b259ad213689642fbaed52291aeaa..5702432f778def3ca0c774c2c7fe5dba7ac0a31e 100644
--- a/ash/wm/workspace/workspace_manager_unittest.cc
+++ b/ash/wm/workspace/workspace_manager_unittest.cc
@@ -391,6 +391,36 @@ TEST_F(WorkspaceManagerTest, DontShowTransientsOnSwitch) {
   EXPECT_FALSE(w3->layer()->IsDrawn());
 }
 
+// Ensure a workspace with two windows reports immersive mode even if only
+// one has the property set.
+TEST_F(WorkspaceManagerTest, ImmersiveMode) {
+  // Open a maximized window.
+  scoped_ptr<Window> w1(CreateTestWindow());
+  w1->SetBounds(gfx::Rect(0, 1, 250, 251));
+  w1->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_MAXIMIZED);
+  w1->Show();
+  wm::ActivateWindow(w1.get());
+
+  // Should be 2 workspaces, normal and maximized.
+  ASSERT_EQ(2u, workspaces().size());
+  ASSERT_EQ(1u, workspaces()[1]->window()->children().size());
+
+  // Immersive mode off by default.
+  EXPECT_FALSE(workspaces()[1]->IsImmersiveMode());
+
+  // Enter immersive mode.
+  w1->SetProperty(ash::internal::kImmersiveModeKey, true);
+  EXPECT_TRUE(workspaces()[1]->IsImmersiveMode());
+
+  // Add a transient child, like a print window.  Still in immersive mode.
+  scoped_ptr<Window> w2(CreateTestWindow());
+  w2->SetBounds(gfx::Rect(0, 1, 150, 151));
+  w1->AddTransientChild(w2.get());
+  w2->Show();
+  wm::ActivateWindow(w2.get());
+  EXPECT_TRUE(workspaces()[1]->IsImmersiveMode());
+}
+
 // Assertions around minimizing a single window.
 TEST_F(WorkspaceManagerTest, MinimizeSingleWindow) {
   scoped_ptr<Window> w1(CreateTestWindow());