Add visibility restrictions to all mojoms that export symbols.

third_party/WebKit/Source/bindings/modules/BUILD.gn

 # Copyright 2014 Tfe 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.
 
 import("//third_party/WebKit/Source/modules/modules.gni")
 import("//third_party/WebKit/Source/bindings/scripts/scripts.gni")
 import("//third_party/WebKit/Source/build/scripts/scripts.gni")
 
 group("bindings_modules_generated") {
   visibility = [ "//third_party/WebKit/*" ]
@@ skipping 52 matching lines @@
 
 make_event_factory("event_modules") {
   visibility = [ ":*" ]
   in_files = [ "$root_gen_dir/blink/EventModulesInterfaces.in" ]
   outputs = [
     "$blink_modules_output_dir/EventModules.cpp",
     "$blink_modules_output_dir/EventModulesHeaders.h",
   ]
   deps = make_core_generated_deps + [ "//third_party/WebKit/Source/bindings/modules:modules_bindings_generated_event_interfaces" ]
   deps += [
-    "//device/generic_sensor/public/interfaces",
     "//device/generic_sensor/public/interfaces:interfaces_blink",
     "//device/vr:mojo_bindings_blink",
     "//media/midi:mojo_blink",
   ]
 }
 
 make_names("event_modules_names") {
   visibility = [ ":*" ]
   in_files = [ "$root_gen_dir/blink/EventModulesInterfaces.in" ]
   outputs = [
@@ skipping 105 matching lines @@
 
   deps = [
     ":event_modules",
     ":event_modules_names",
     ":event_target_modules_names",
     "//third_party/WebKit/Source/core",
     "//third_party/WebKit/Source/wtf",
     "//v8",
   ]
 }