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

chrome/test/BUILD.gn

Index: chrome/test/BUILD.gn
diff --git a/chrome/test/BUILD.gn b/chrome/test/BUILD.gn
index ed934c26d3a3ef39f039cdafde67dd235bd921a4..47bed3b0c51b3c803aebdef99323737c27ed4e2a 100644
--- a/chrome/test/BUILD.gn
+++ b/chrome/test/BUILD.gn
@@ -1225,6 +1225,7 @@ test("browser_tests") {
     "//base",
     "//components/spellcheck:build_features",
     "//components/sync:test_support_model",
+    "//device/generic_sensor",
     "//extensions/features",
     "//media:media_features",
     "//ppapi/features",
@@ -1558,6 +1559,7 @@ test("browser_tests") {
       "../browser/first_run/try_chrome_dialog_view_browsertest.cc",
       "../browser/gcm/fake_gcm_profile_service.cc",
       "../browser/gcm/fake_gcm_profile_service.h",
+      "../browser/generic_sensor_browsertest.cc",
       "../browser/geolocation/access_token_store_browsertest.cc",
       "../browser/geolocation/geolocation_browsertest.cc",
       "../browser/global_keyboard_shortcuts_mac_browsertest.mm",
@@ -3356,6 +3358,7 @@ test("unit_tests") {
     "../browser/search_engines/template_url_parser_unittest.cc",
     "../browser/search_engines/template_url_service_sync_unittest.cc",
     "../browser/search_engines/template_url_service_unittest.cc",
+    "../browser/sensor/sensor_permission_context_unittest.cc",
     "../browser/service_process/service_process_control_mac_unittest.mm",
     "../browser/sessions/chrome_serialized_navigation_driver_unittest.cc",
     "../browser/sessions/restore_on_startup_policy_handler_unittest.cc",