Fix an interactive ui test

chrome/browser/ui/views/tabs/tab_drag_controller_interactive_uitest.cc

Index: chrome/browser/ui/views/tabs/tab_drag_controller_interactive_uitest.cc
diff --git a/chrome/browser/ui/views/tabs/tab_drag_controller_interactive_uitest.cc b/chrome/browser/ui/views/tabs/tab_drag_controller_interactive_uitest.cc
index 4c51a814572e289e548e65e81b502a7bd954dddf..5e6c9db1b80b3d1ab16eac5d9caf96a08b9521d0 100644
--- a/chrome/browser/ui/views/tabs/tab_drag_controller_interactive_uitest.cc
+++ b/chrome/browser/ui/views/tabs/tab_drag_controller_interactive_uitest.cc
@@ -1793,7 +1793,7 @@ void DragSingleTabToSeparateWindowInSecondDisplayStep2(
 
 // Drags from browser to a second display and releases input.
 IN_PROC_BROWSER_TEST_P(DetachToBrowserInSeparateDisplayTabDragControllerTest,
-                       DISABLED_DragSingleTabToSeparateWindowInSecondDisplay) {
+                       DragSingleTabToSeparateWindowInSecondDisplay) {
   // Add another tab.
   AddTabAndResetBrowser(browser());
   TabStrip* tab_strip = GetTabStripForBrowser(browser());
@@ -1821,16 +1821,13 @@ IN_PROC_BROWSER_TEST_P(DetachToBrowserInSeparateDisplayTabDragControllerTest,
   TabStrip* tab_strip2 = GetTabStripForBrowser(new_browser);
   ASSERT_FALSE(tab_strip2->IsDragSessionActive());
 
-  // This other browser should be on the second screen (with mouse drag)
-  // With the touch input the browser cannot be dragged from one screen
-  // to another and the window stays on the first screen.
-  if (input_source() == INPUT_SOURCE_MOUSE) {
-    aura::Window::Windows roots = ash::Shell::GetAllRootWindows();
-    ASSERT_EQ(2u, roots.size());
-    aura::Window* second_root = roots[1];
-    EXPECT_EQ(second_root,
-              new_browser->window()->GetNativeWindow()->GetRootWindow());
-  }
+  // This other browser should be on the second screen with both
+  // mouse drag and touch drag.

[Peter Kasting, 2017/04/24 22:04:16]

Nit: Make sure to wrap at 80 columns (not earlier)

[weidongg, 2017/04/25 00:25:47]

Done.

+  aura::Window::Windows roots = ash::Shell::GetAllRootWindows();
+  ASSERT_EQ(2u, roots.size());
+  aura::Window* second_root = roots[1];
+  EXPECT_EQ(second_root,
+            new_browser->window()->GetNativeWindow()->GetRootWindow());
 
   EXPECT_EQ("0", IDString(new_browser->tab_strip_model()));
   EXPECT_EQ("1", IDString(browser()->tab_strip_model()));