Avoid watching for plugin updates on Android

Chrome doesn't support plugins on Android, so we shouldn't monitor the plugins
directory for any new ones that appear.

BUG=159063


Review URL: https://chromiumcodereview.appspot.com/11364106

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@166378 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/content/browser/plugin_service_impl.h b/content/browser/plugin_service_impl.h
index 6bca392a..9c4d5018 100644
--- a/content/browser/plugin_service_impl.h
+++ b/content/browser/plugin_service_impl.h
@@ -32,7 +32,7 @@
 #include "base/win/registry.h"
 #endif
 
-#if defined(OS_POSIX) && !defined(OS_OPENBSD)
+#if defined(OS_POSIX) && !defined(OS_OPENBSD) && !defined(OS_ANDROID)
 #include "base/files/file_path_watcher.h"
 #endif
 
@@ -202,7 +202,7 @@
       const FilePath& plugin_path,
       PluginProcessHost::Client* client);
 
-#if defined(OS_POSIX) && !defined(OS_OPENBSD)
+#if defined(OS_POSIX) && !defined(OS_OPENBSD) && !defined(OS_ANDROID)
   // Registers a new FilePathWatcher for a given path.
   static void RegisterFilePathWatcher(
       base::files::FilePathWatcher* watcher,
@@ -223,7 +223,7 @@
   base::WaitableEventWatcher hklm_watcher_;
 #endif
 
-#if defined(OS_POSIX) && !defined(OS_OPENBSD)
+#if defined(OS_POSIX) && !defined(OS_OPENBSD) && !defined(OS_ANDROID)
   ScopedVector<base::files::FilePathWatcher> file_watchers_;
   scoped_refptr<PluginDirWatcherDelegate> file_watcher_delegate_;
 #endif