Introduce KernelVersionDialogController

- Create a controller to display data and for the
  kernel version field in FirmwareVersionDialogFragment

Bug: 36458278
Test: make RunSettingsRoboTests -j40
Change-Id: Ie3f735e4559d8b01f67c65a1a46f1f1ad2dcdcd5

src/com/android/settings/deviceinfo/firmwareversion/FirmwareVersionDialogFragment.java

@@ -87,5 +87,6 @@ public class FirmwareVersionDialogFragment extends InstrumentedDialogFragment {
         new FirmwareVersionDialogController(this).initialize();
         new SecurityPatchLevelDialogController(this).initialize();
         new BasebandVersionDialogController(this).initialize();
+        new KernelVersionDialogController(this).initialize();
     }
 }

src/com/android/settings/deviceinfo/firmwareversion/KernelVersionDialogController.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.deviceinfo.firmwareversion;
+
+import android.support.annotation.VisibleForTesting;
+
+import com.android.settings.R;
+import com.android.settingslib.DeviceInfoUtils;
+
+public class KernelVersionDialogController {
+
+    @VisibleForTesting
+    static int KERNEL_VERSION_VALUE_ID = R.id.kernel_version_value;
+
+    private final FirmwareVersionDialogFragment mDialog;
+
+    public KernelVersionDialogController(FirmwareVersionDialogFragment dialog) {
+        mDialog = dialog;
+    }
+
+    /**
+     * Updates kernel version to the dialog.
+     */
+    public void initialize() {
+        mDialog.setText(KERNEL_VERSION_VALUE_ID, DeviceInfoUtils.getFormattedKernelVersion());
+    }
+}