Add visibility restrictions to all mojoms that export symbols.

chrome/browser/BUILD.gn

 # Copyright 2014 The 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("//build/config/chrome_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//chrome/common/features.gni")
@@ skipping 3618 matching lines @@
     }
 
     if (use_ozone) {
       sources += [
         "fullscreen_ozone.cc",
         "media/webrtc/window_icon_util_ozone.cc",
       ]
     }
   }
 
-  if (android_java_ui) {
-    deps += [ "//third_party/WebKit/public:android_mojo_bindings" ]
-  }
-
   if (enable_plugin_installation) {
     sources += [
       "plugins/plugin_installer.cc",
       "plugins/plugin_installer.h",
       "plugins/plugin_installer_observer.cc",
       "plugins/plugin_installer_observer.h",
       "plugins/plugins_resource_service.cc",
       "plugins/plugins_resource_service.h",
     ]
   }
@@ skipping 837 matching lines @@
       "media/pepper_cdm_test_constants.cc",
       "media/pepper_cdm_test_constants.h",
     ]
   }
 }
 
 service_manifest("preferences_manifest") {
   name = "preferences"
   source = "prefs/preferences_manifest.json"
 }