chromeos: Remove AshTestBase::SupportsMultipleDisplays

ash/utility/screenshot_controller_unittest.cc

Index: ash/utility/screenshot_controller_unittest.cc
diff --git a/ash/utility/screenshot_controller_unittest.cc b/ash/utility/screenshot_controller_unittest.cc
index 77ef0a1c28b4410187fe2dff4fa6c50961005daf..3b65da59b2e07bbfc1e67ee6ca5cdc8802abf913 100644
--- a/ash/utility/screenshot_controller_unittest.cc
+++ b/ash/utility/screenshot_controller_unittest.cc
@@ -256,9 +256,6 @@ TEST_F(PartialScreenshotControllerTest, TwoFingerTouch) {
 // across multiple monitors
 // cursor. See http://crbug.com/462229
 TEST_F(PartialScreenshotControllerTest, MouseWarpTest) {
-  if (!SupportsMultipleDisplays())
-    return;
-
   // Create two displays.
   Shell* shell = Shell::GetInstance();
   UpdateDisplay("500x500,500x500");
@@ -418,9 +415,6 @@ TEST_F(WindowScreenshotControllerTest, MouseOperation) {
 }
 
 TEST_F(WindowScreenshotControllerTest, MultiDisplays) {
-  if (!SupportsMultipleDisplays())
-    return;
-
   UpdateDisplay("400x400,500x500");
 
   ui::test::EventGenerator& generator(GetEventGenerator());
@@ -450,9 +444,6 @@ TEST_F(WindowScreenshotControllerTest, MultiDisplays) {
 }
 
 TEST_F(ScreenshotControllerTest, MultipleDisplays) {
-  if (!SupportsMultipleDisplays())
-    return;
-
   StartPartialScreenshotSession();
   EXPECT_TRUE(IsActive());
   UpdateDisplay("400x400,500x500");