Declare providing extension capabilities in the manifest.

chrome/browser/chromeos/file_system_provider/registry.h

Index: chrome/browser/chromeos/file_system_provider/registry.h
diff --git a/chrome/browser/chromeos/file_system_provider/registry.h b/chrome/browser/chromeos/file_system_provider/registry.h
index 9072905cc9107507e346139a7c3928ba2d567ce0..f264d16cbc8e24e5dd17536d6e8164e7aa60d4b7 100644
--- a/chrome/browser/chromeos/file_system_provider/registry.h
+++ b/chrome/browser/chromeos/file_system_provider/registry.h
@@ -10,6 +10,7 @@
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/chromeos/file_system_provider/registry_interface.h"
 #include "chrome/browser/chromeos/file_system_provider/watcher.h"
+#include "chrome/common/extensions/api/file_system_provider/file_system_provider_handler.h"
 
 class Profile;
 
@@ -24,7 +25,6 @@ namespace file_system_provider {
 extern const char kPrefKeyFileSystemId[];
 extern const char kPrefKeyDisplayName[];
 extern const char kPrefKeyWritable[];
-extern const char kPrefKeySource[];
 extern const char kPrefKeySupportsNotifyTag[];
 extern const char kPrefKeyWatchers[];
 extern const char kPrefKeyWatcherEntryPath[];
@@ -38,11 +38,6 @@ class ProvidedFileSystemInfo;
 // Registers preferences to remember registered file systems between reboots.
 void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
 
-// Converts a file system's data source value back and forth between Source and
-// std::string types.
-std::string SourceToString(Source source);
-bool StringToSource(const std::string& source, Source* result);
-
 // Remembers and restores file systems in a persistent storage.
 class Registry : public RegistryInterface {
  public: