Fix comment in GeolocationConfig mojo interface

The comment in .mojom file is fixed.

BUG=731758

Change-Id: I110c4220e6fa2f7bd49ed9786d8f21015c955e95
Reviewed-on: https://chromium-review.googlesource.com/571031Reviewed-by: Amirhossein Simjour <asimjour@chromium.org>
Reviewed-by: Ken Rockot <rockot@chromium.org>
Reviewed-by: Emily Stark <estark@chromium.org>
Commit-Queue: Amirhossein Simjour <asimjour@chromium.org>
Cr-Commit-Position: refs/heads/master@{#487205}

device/geolocation/public/interfaces/geolocation_config.mojom

@@ -4,8 +4,8 @@
 
 module device.mojom;
 
-// Provides an interface for browser process to access geolocation capturing
-// config.
+// Provides an interface for trusted clients (e.g., the browser process
+// in Chrome) to access geolocation capturing config.
 interface GeolocationConfig {
   // Returns true if the location is being captured and high_accuracy is
   // enabled.