Revert of Rename MaximizeMode to TabletMode

ash/wm/maximize_mode/maximize_mode_backdrop_delegate_impl.cc

Index: ash/wm/maximize_mode/maximize_mode_backdrop_delegate_impl.cc
diff --git a/ash/wm/maximize_mode/maximize_mode_backdrop_delegate_impl.cc b/ash/wm/maximize_mode/maximize_mode_backdrop_delegate_impl.cc
new file mode 100644
index 0000000000000000000000000000000000000000..73305640804b71d7f7c5d9ff645f449da070b919
--- /dev/null
+++ b/ash/wm/maximize_mode/maximize_mode_backdrop_delegate_impl.cc
@@ -0,0 +1,17 @@
+// Copyright 2017 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/wm/maximize_mode/maximize_mode_backdrop_delegate_impl.h"
+
+namespace ash {
+
+MaximizeModeBackdropDelegateImpl::MaximizeModeBackdropDelegateImpl() = default;
+
+MaximizeModeBackdropDelegateImpl::~MaximizeModeBackdropDelegateImpl() = default;
+
+bool MaximizeModeBackdropDelegateImpl::HasBackdrop(aura::Window* window) {
+  return true;
+}
+
+}  // namespace ash