Fixing problem with edge swipe exiting immersive mode

chrome/browser/ui/views/frame/immersive_mode_controller_ash_unittest.cc

Index: chrome/browser/ui/views/frame/immersive_mode_controller_ash_unittest.cc
diff --git a/chrome/browser/ui/views/frame/immersive_mode_controller_ash_unittest.cc b/chrome/browser/ui/views/frame/immersive_mode_controller_ash_unittest.cc
index 3b5ee7c4c5240f2cccb0c283fb3f6621e7ecb155..fad6dffd3761c9c1231a97e1466c6cfedd4bea06 100644
--- a/chrome/browser/ui/views/frame/immersive_mode_controller_ash_unittest.cc
+++ b/chrome/browser/ui/views/frame/immersive_mode_controller_ash_unittest.cc
@@ -10,6 +10,7 @@
 #include "ash/shelf/shelf_types.h"
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
+#include "ash/wm/window_state.h"
 #include "base/command_line.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/ui/browser_commands.h"
@@ -262,6 +263,24 @@ TEST_F(ImmersiveModeControllerAshTest, TabAndBrowserFullscreen) {
   EXPECT_TRUE(controller()->ShouldHideTabIndicators());
 }
 
+// Check that the window state of a browser window gets properly marked for
+// immersive mode.

[pkotwicz, 2014/06/02 22:27:58]

I don't think this test is useful. ImmersiveModeController is a thin wrapper
around ash::ImmersiveFullscreenController

[Mr4D (OOO till 08-26), 2014/06/03 14:36:40]

Yes, it is now - and if someone changes that it might not test what we want
anymore. This was the reason why I left it here on purpose. If you strongly feel
otherwise I'll remove it.

[pkotwicz, 2014/06/03 15:15:02]

You could theoretically make that argument for duplicating all of the tests in
immersive_fullscreen_controller_unittest.cc in
immersive_mode_controller_ash_unittest.cc

If someone changes the relationship between ImmersiveFullscreenController and
ImmersiveModeController they will need to appropriately update the tests.

+TEST_F(ImmersiveModeControllerAshTest, WindowStateImmersiveModeFullscreen) {
+  AddTab(browser(), GURL("about:blank"));
+
+  ash::wm::WindowState* window_state =
+      ash::wm::GetWindowState(browser()->window()->GetNativeWindow());
+
+  EXPECT_FALSE(window_state->in_immersive_fullscreen());
+  ToggleFullscreen();
+  ASSERT_TRUE(controller()->IsEnabled());
+  EXPECT_TRUE(window_state->in_immersive_fullscreen());
+
+  ToggleFullscreen();
+  ASSERT_FALSE(controller()->IsEnabled());
+  EXPECT_FALSE(window_state->in_immersive_fullscreen());
+}
+
 class ImmersiveModeControllerAshTestHostedApp
     : public ImmersiveModeControllerAshTest {
  public: