Adds ash::MaterialDesignController

ash/material_design/material_design_controller.cc

Index: ash/material_design/material_design_controller.cc
diff --git a/ash/material_design/material_design_controller.cc b/ash/material_design/material_design_controller.cc
new file mode 100644
index 0000000000000000000000000000000000000000..39b6438eab35c2e3b69cd340f31c0256d2deaee7
--- /dev/null
+++ b/ash/material_design/material_design_controller.cc
@@ -0,0 +1,55 @@
+// Copyright 2016 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 "ash/ash_switches.h"
+#include "ash/material_design/material_design_controller.h"
+#include "base/command_line.h"
+#include "base/logging.h"
+#include "base/trace_event/trace_event.h"
+
+namespace ash {
+
+bool MaterialDesignController::is_mode_initialized_ = false;
+bool MaterialDesignController::mode_ = false;
+
+// static
+void MaterialDesignController::Initialize() {
+  TRACE_EVENT0("startup", "ash::MaterialDesignController::InitializeMode");
+  CHECK(!is_mode_initialized_);
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kAshDisableMaterialDesign)) {
+    SetMode(false);
+  } else if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+                 switches::kAshEnableMaterialDesign)) {
+    SetMode(true);
+  } else {
+    SetMode(DefaultMode());
+  }
+}
+
+// static
+bool MaterialDesignController::IsMaterial() {
+  CHECK(is_mode_initialized_);
+  return mode_;
+}
+
+// static
+bool MaterialDesignController::DefaultMode() {
+  return false;
+}
+
+// static
+void MaterialDesignController::SetMode(bool mode) {
+  mode_ = mode;
+  is_mode_initialized_ = true;
+}
+
+// static
+void MaterialDesignController::Uninitialize() {
+  is_mode_initialized_ = false;
+}
+
+}  // namespace ui