[Sync] Move HttpBridge to sync/

sync/internal_api/public/http_post_provider_interface.h

Index: sync/internal_api/public/http_post_provider_interface.h
diff --git a/sync/internal_api/public/http_post_provider_interface.h b/sync/internal_api/public/http_post_provider_interface.h
index adee0df84f710d9aaa1f9bc78aea93430e9a1e37..378e18fc98f4a716c1e52bf3a3260aa628616219 100644
--- a/sync/internal_api/public/http_post_provider_interface.h
+++ b/sync/internal_api/public/http_post_provider_interface.h
@@ -16,10 +16,6 @@ namespace csync {
 // want to make a subsequent POST.
 class HttpPostProviderInterface {
  public:
-  // Use specified user agent string when POSTing. If not called a default UA
-  // may be used.
-  virtual void SetUserAgent(const char* user_agent) = 0;
-
   // Add additional headers to the request.
   virtual void SetExtraRequestHeaders(const char* headers) = 0;