browser: Fix some presubmit errors.

chrome/browser/geolocation/gps_location_provider_linux.h

Index: chrome/browser/geolocation/gps_location_provider_linux.h
diff --git a/chrome/browser/geolocation/gps_location_provider_linux.h b/chrome/browser/geolocation/gps_location_provider_linux.h
index ec7dba443d7958aa96e4dc57bc712c2ea179b0ea..68fff236ea41b6764c4cc7cbf6e1c8603bb1f564 100644
--- a/chrome/browser/geolocation/gps_location_provider_linux.h
+++ b/chrome/browser/geolocation/gps_location_provider_linux.h
@@ -11,11 +11,10 @@
 #define CHROME_BROWSER_GEOLOCATION_GPS_LOCATION_PROVIDER_LINUX_H_
 #pragma once
 
-#include "chrome/browser/geolocation/location_provider.h"
-#include "chrome/common/geoposition.h"
-
 #include "base/scoped_ptr.h"
 #include "base/task.h"
+#include "chrome/browser/geolocation/location_provider.h"
+#include "chrome/common/geoposition.h"
 
 class LibGps;
 
@@ -29,7 +28,7 @@ class GpsLocationProviderLinux : public LocationProviderBase {
   typedef LibGps* (*LibGpsFactory)();
   // |factory| will be used to create the gpsd client library wrapper. (Note
   // NewGpsLocationProvider() will use the default factory).
-  GpsLocationProviderLinux(LibGpsFactory libgps_factory);
+  explicit GpsLocationProviderLinux(LibGpsFactory libgps_factory);
   virtual ~GpsLocationProviderLinux();
 
   // LocationProvider