Add authentication support to AttachmentUploaderImpl.

sync/internal_api/public/attachments/attachment_uploader_impl.h

Index: sync/internal_api/public/attachments/attachment_uploader_impl.h
diff --git a/sync/internal_api/public/attachments/attachment_uploader_impl.h b/sync/internal_api/public/attachments/attachment_uploader_impl.h
index 0720bcb0594334e7da082471f5e90334030e58e4..627535c4fd66d49b533866d750f68bce3d877e8d 100644
--- a/sync/internal_api/public/attachments/attachment_uploader_impl.h
+++ b/sync/internal_api/public/attachments/attachment_uploader_impl.h
@@ -7,6 +7,7 @@
 
 #include "base/containers/scoped_ptr_hash_map.h"
 #include "base/threading/non_thread_safe.h"
+#include "google_apis/gaia/oauth2_token_service_request.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "sync/api/attachments/attachment_uploader.h"
 
@@ -23,10 +24,20 @@ class SYNC_EXPORT AttachmentUploaderImpl : public AttachmentUploader,
                                            public base::NonThreadSafe {
  public:
   // |url_prefix| is the URL prefix (including trailing slash) to be used when
-  // |uploading attachments.
-  AttachmentUploaderImpl(const std::string& url_prefix,
-                         const scoped_refptr<net::URLRequestContextGetter>&
-                             url_request_context_getter);
+  // uploading attachments.
+  //
+  // |url_request_context_getter| provides a URLRequestContext.
+  //
+  // |account_id| is the account id to use for uploads.
+  //
+  // |token_service_provider| provides an OAuth2 token service.
+  AttachmentUploaderImpl(
+      const std::string& url_prefix,
+      const scoped_refptr<net::URLRequestContextGetter>&
+          url_request_context_getter,
+      const std::string& account_id,
+      scoped_ptr<OAuth2TokenServiceRequest::TokenServiceProvider>
+          token_service_provider);
   virtual ~AttachmentUploaderImpl();
 
   // AttachmentUploader implementation.
@@ -43,6 +54,9 @@ class SYNC_EXPORT AttachmentUploaderImpl : public AttachmentUploader,
 
   std::string url_prefix_;
   scoped_refptr<net::URLRequestContextGetter> url_request_context_getter_;
+  std::string account_id_;
+  scoped_ptr<OAuth2TokenServiceRequest::TokenServiceProvider>
+      token_service_provider_;
   StateMap state_map_;
   DISALLOW_COPY_AND_ASSIGN(AttachmentUploaderImpl);
 };