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

chrome/browser/BUILD.gn

Index: chrome/browser/BUILD.gn
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index 48b4dc79010dd732c5a26e2b0890e7955cf5a6d5..974d7b627349c0b9c48fdf930f0663a115629ce3 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -1043,6 +1043,8 @@ split_static_library("browser") {
     "search_engines/ui_thread_search_terms_data.h",
     "search_engines/ui_thread_search_terms_data_android.cc",
     "search_engines/ui_thread_search_terms_data_android.h",
+    "sensor/sensor_permission_context.cc",
+    "sensor/sensor_permission_context.h",
     "services/gcm/gcm_product_util.cc",
     "services/gcm/gcm_product_util.h",
     "services/gcm/gcm_profile_service_factory.cc",
@@ -3363,6 +3365,8 @@ split_static_library("browser") {
       "search/contextual_search_policy_handler_android.h",
       "search_engines/template_url_service_android.cc",
       "search_engines/template_url_service_android.h",
+      "sensor/sensor_permission_infobar_delegate_android.cc",
+      "sensor/sensor_permission_infobar_delegate_android.h",
       "signin/oauth2_token_service_delegate_android.cc",
       "signin/oauth2_token_service_delegate_android.h",
       "ssl/security_state_model_android.cc",