Remove MaterialDesignController::IsModeMaterial

ui/base/material_design/material_design_controller_unittest.cc

 // Copyright 2015 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 <string>
 
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/material_design/material_design_controller.h"
@@ skipping 120 matching lines @@
   EXPECT_EQ(MaterialDesignController::DefaultMode(),
             MaterialDesignController::GetMode());
 }
 
 // Verify an invalid command line value uses the default mode.
 TEST_F(MaterialDesignControllerTestInvalid, InvalidCommandLineValue) {
   EXPECT_EQ(MaterialDesignController::DefaultMode(),
             MaterialDesignController::GetMode());
 }
 
-// Verify that MaterialDesignController::IsModeMaterial() will be true when
-// initialized with command line flag "material".
-TEST_F(MaterialDesignControllerTestMaterial, IsModeMaterialInitializesMode) {
-  EXPECT_TRUE(MaterialDesignController::IsModeMaterial());
-}
-
 }  // namespace
 }  // namespace ui