[jumbo] add missing include guards in //chrome

Also, move some existing include guards closer to the top of the file.

And fix a license header typo (required by PRESUBMIT).

Change-Id: I7f7153ea0e9787ea473753b69b6b83ce0c5ea6d3
Reviewed-on: https://chromium-review.googlesource.com/882325
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Reviewed-by: apacible <apacible@chromium.org>
Commit-Queue: Mostyn Bramley-Moore <mostynb@vewd.com>
Cr-Commit-Position: refs/heads/master@{#531611}

chrome/browser/chromeos/file_manager/volume_manager_factory.h

@@ -2,12 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "base/macros.h"
-#include "components/keyed_service/content/browser_context_keyed_service_factory.h"
-
 #ifndef CHROME_BROWSER_CHROMEOS_FILE_MANAGER_VOLUME_MANAGER_FACTORY_H_
 #define CHROME_BROWSER_CHROMEOS_FILE_MANAGER_VOLUME_MANAGER_FACTORY_H_
 
+#include "base/macros.h"
+#include "components/keyed_service/content/browser_context_keyed_service_factory.h"
+
 namespace base {
 template <typename T>
 struct DefaultSingletonTraits;

chrome/browser/chromeos/printing/printer_detector_test_util.h

@@ -1,7 +1,10 @@
-// Copyright 2017 the Chromium Authors. All rights reserved.
+// 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.
 
+#ifndef CHROME_BROWSER_CHROMEOS_PRINTING_PRINTER_DETECTOR_TEST_UTIL_H_
+#define CHROME_BROWSER_CHROMEOS_PRINTING_PRINTER_DETECTOR_TEST_UTIL_H_
+
 #include "chrome/browser/chromeos/printing/printer_detector.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "content/public/test/test_utils.h"
@@ -57,3 +60,5 @@ class PrinterDetectorTest : public testing::Test {
 
 }  // namespace
 }  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_PRINTING_PRINTER_DETECTOR_TEST_UTIL_H_

chrome/test/media_router/test_media_sinks_observer.h

@@ -2,15 +2,15 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#ifndef CHROME_TEST_MEDIA_ROUTER_TEST_MEDIA_SINKS_OBSERVER_H_
+#define CHROME_TEST_MEDIA_ROUTER_TEST_MEDIA_SINKS_OBSERVER_H_
+
 #include <map>
 #include <string>
 #include <vector>
 
 #include "chrome/browser/media/router/media_sinks_observer.h"
 
-#ifndef CHROME_TEST_MEDIA_ROUTER_TEST_MEDIA_SINKS_OBSERVER_H_
-#define CHROME_TEST_MEDIA_ROUTER_TEST_MEDIA_SINKS_OBSERVER_H_
-
 namespace media_router {
 
 class MediaRouter;