Make MediaPlayerEventRouter a PKS to decouple it from ExtensionService

chrome/browser/extensions/extension_function_registry.cc

Index: chrome/browser/extensions/extension_function_registry.cc
diff --git a/chrome/browser/extensions/extension_function_registry.cc b/chrome/browser/extensions/extension_function_registry.cc
index 2dd60242935239e258c70b7363d57e9222edfefc..ea979f3f1e6f927543620d2c7f5953f1331fa642 100644
--- a/chrome/browser/extensions/extension_function_registry.cc
+++ b/chrome/browser/extensions/extension_function_registry.cc
@@ -65,11 +65,14 @@
 #include "chrome/browser/chromeos/extensions/input_method_api.h"
 #include "chrome/browser/chromeos/extensions/power/power_api.h"
 #include "chrome/browser/chromeos/extensions/wallpaper_private_api.h"
-#include "chrome/browser/chromeos/media/media_player_extension_api.h"
 #include "chrome/browser/extensions/api/input_ime/input_ime_api.h"
 #include "chrome/browser/extensions/api/terminal/terminal_private_api.h"
 #endif
 
+#if defined(OS_CHROMEOS) && defined(FILE_MANAGER_EXTENSION)
+#include "chrome/browser/chromeos/extensions/media_player_api.h"
+#endif
+
 // static
 ExtensionFunctionRegistry* ExtensionFunctionRegistry::GetInstance() {
   return Singleton<ExtensionFunctionRegistry>::get();
@@ -388,11 +391,13 @@ void ExtensionFunctionRegistry::ResetFunctions() {
   // FileBrowserHandler.
   RegisterFunction<FileHandlerSelectFileFunction>();
 
+#if defined(FILE_MANAGER_EXTENSION)
   // Mediaplayer
-  RegisterFunction<PlayMediaplayerFunction>();
-  RegisterFunction<GetPlaylistMediaplayerFunction>();
-  RegisterFunction<SetWindowHeightMediaplayerFunction>();
-  RegisterFunction<CloseWindowMediaplayerFunction>();
+  RegisterFunction<extensions::PlayMediaplayerFunction>();
+  RegisterFunction<extensions::GetPlaylistMediaplayerFunction>();
+  RegisterFunction<extensions::SetWindowHeightMediaplayerFunction>();
+  RegisterFunction<extensions::CloseWindowMediaplayerFunction>();
+#endif
 
   // WallpaperManagerPrivate functions.
   RegisterFunction<WallpaperStringsFunction>();