chromeos: Remove AshTestBase::SupportsMultipleDisplays

ash/display/display_error_observer_chromeos_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/display/display_error_observer_chromeos.h"
 
 #include "ash/common/system/chromeos/devicetype_utils.h"
 #include "ash/display/display_util.h"
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
@@ skipping 24 matching lines @@
     return GetDisplayErrorNotificationMessageForTest();
   }
 
  private:
   std::unique_ptr<DisplayErrorObserver> observer_;
 
   DISALLOW_COPY_AND_ASSIGN(DisplayErrorObserverTest);
 };
 
 TEST_F(DisplayErrorObserverTest, Normal) {
-  if (!SupportsMultipleDisplays())
-    return;
-
   UpdateDisplay("200x200,300x300");
   observer()->OnDisplayModeChangeFailed(
       display::DisplayConfigurator::DisplayStateList(),
       display::MULTIPLE_DISPLAY_STATE_DUAL_MIRROR);
   EXPECT_EQ(l10n_util::GetStringUTF16(IDS_ASH_DISPLAY_FAILURE_ON_MIRRORING),
             GetMessageContents());
 }
 
 TEST_F(DisplayErrorObserverTest, CallTwice) {
-  if (!SupportsMultipleDisplays())
-    return;
-
   UpdateDisplay("200x200,300x300");
   observer()->OnDisplayModeChangeFailed(
       display::DisplayConfigurator::DisplayStateList(),
       display::MULTIPLE_DISPLAY_STATE_DUAL_MIRROR);
   base::string16 message = GetMessageContents();
   EXPECT_FALSE(message.empty());
 
   observer()->OnDisplayModeChangeFailed(
       display::DisplayConfigurator::DisplayStateList(),
       display::MULTIPLE_DISPLAY_STATE_DUAL_MIRROR);
   base::string16 message2 = GetMessageContents();
   EXPECT_FALSE(message2.empty());
   EXPECT_EQ(message, message2);
 }
 
 TEST_F(DisplayErrorObserverTest, CallWithDifferentState) {
-  if (!SupportsMultipleDisplays())
-    return;
-
   UpdateDisplay("200x200,300x300");
   observer()->OnDisplayModeChangeFailed(
       display::DisplayConfigurator::DisplayStateList(),
       display::MULTIPLE_DISPLAY_STATE_DUAL_MIRROR);
   EXPECT_EQ(l10n_util::GetStringUTF16(IDS_ASH_DISPLAY_FAILURE_ON_MIRRORING),
             GetMessageContents());
 
   observer()->OnDisplayModeChangeFailed(
       display::DisplayConfigurator::DisplayStateList(),
       display::MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED);
   EXPECT_EQ(ash::SubstituteChromeOSDeviceType(
                 IDS_ASH_DISPLAY_FAILURE_ON_NON_MIRRORING),
             GetMessageContents());
 }
 
 }  // namespace ash