[sensors] Add Permission guard to the generic sensor apis.

chrome/browser/sensor/sensor_permission_infobar_delegate_android.cc

+// 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 "chrome/browser/sensor/sensor_permission_infobar_delegate_android.h"
+
+#include "chrome/browser/android/android_theme_resources.h"
+#include "chrome/grit/generated_resources.h"
+
+SensorPermissionInfoBarDelegateAndroid::SensorPermissionInfoBarDelegateAndroid(
+    const GURL& requesting_frame,
+    bool user_gesture,
+    Profile* profile,
+    const PermissionSetCallback& callback)
+    : PermissionInfoBarDelegate(requesting_frame,
+                                content::PermissionType::SENSORS,
+                                CONTENT_SETTINGS_TYPE_SENSORS,
+                                user_gesture,
+                                profile,
+                                callback) {}
+
+SensorPermissionInfoBarDelegateAndroid::
+    ~SensorPermissionInfoBarDelegateAndroid() {}
+
+infobars::InfoBarDelegate::InfoBarIdentifier
+SensorPermissionInfoBarDelegateAndroid::GetIdentifier() const {
+  return SENSORS_PERMISSION_INFOBAR_DELEGATE_ANDROID;
+}
+
+int SensorPermissionInfoBarDelegateAndroid::GetIconId() const {
+  // TODO (riju):
+  // return IDR_ANDROID_INFOBAR_SENSORS;
+  // as of now reuse MIDI's icon
+  return IDR_ANDROID_INFOBAR_MIDI;
+  // return 1;
+}
+
+int SensorPermissionInfoBarDelegateAndroid::GetMessageResourceId() const {
+  // TODO (riju):
+  return IDS_SENSORS_INFOBAR_QUESTION;
+}