Add the basic code skeleton for system info event router

chrome/browser/extensions/api/system_info_storage/storage_info_provider_linux.cc

Index: chrome/browser/extensions/api/system_info_storage/storage_info_provider_linux.cc
diff --git a/chrome/browser/extensions/api/system_info_storage/storage_info_provider_linux.cc b/chrome/browser/extensions/api/system_info_storage/storage_info_provider_linux.cc
index 43790f99a0c3bcf6c1ae19bf0205088791f152b5..a61b3c36cd40900d1e929e9711395f903fb851fd 100644
--- a/chrome/browser/extensions/api/system_info_storage/storage_info_provider_linux.cc
+++ b/chrome/browser/extensions/api/system_info_storage/storage_info_provider_linux.cc
@@ -19,20 +19,31 @@ class StorageInfoProviderLinux : public StorageInfoProvider {
   virtual ~StorageInfoProviderLinux() {}
 
   virtual bool QueryInfo(StorageInfo* info) OVERRIDE;
-  virtual bool QueryUnitInfo(const std::string& id,
+  virtual bool QueryUnitInfo(const FilePath::StringType& path,
                              StorageUnitInfo* info) OVERRIDE;
+ private:
+  virtual bool PlatformStartWatching(Delegate* delegate) OVERRIDE;
+  virtual bool PlatformStopWatching() OVERRIDE;
 };
 
 bool StorageInfoProviderLinux::QueryInfo(StorageInfo* info) {
   return false;
 }
 
-bool StorageInfoProviderLinux::QueryUnitInfo(const std::string& id,
+bool StorageInfoProviderLinux::QueryUnitInfo(const FilePath::StringType& path,
                                              StorageUnitInfo* info) {
   return false;
 }
 
-}   // namespace
+bool StorageInfoProviderLinux::PlatformStartWatching(Delegate* delegate) {
+  return false;
+}
+
+bool StorageInfoProviderLinux::PlatformStopWatching() {
+  return false;
+}
+
+}  // namespace
 
 // static
 StorageInfoProvider* StorageInfoProvider::Get() {