[Sync] Move //components/sync to the syncer namespace, take 2.

components/sync/core/attachments/attachment_service_proxy.h

Index: components/sync/core/attachments/attachment_service_proxy.h
diff --git a/components/sync/core/attachments/attachment_service_proxy.h b/components/sync/core/attachments/attachment_service_proxy.h
index b7a4e73a1d16352ec63229b21427105bb4cff9ab..a2a588e9ea05322bbce960b1e93514dd271bbe81 100644
--- a/components/sync/core/attachments/attachment_service_proxy.h
+++ b/components/sync/core/attachments/attachment_service_proxy.h
@@ -44,7 +44,7 @@ class AttachmentServiceProxy : public AttachmentService {
   // calls to this object become no-ops.
   AttachmentServiceProxy(
       const scoped_refptr<base::SequencedTaskRunner>& wrapped_task_runner,
-      const base::WeakPtr<syncer::AttachmentService>& wrapped);
+      const base::WeakPtr<AttachmentService>& wrapped);
 
   AttachmentServiceProxy(const AttachmentServiceProxy& other);
 
@@ -72,7 +72,7 @@ class AttachmentServiceProxy : public AttachmentService {
                public base::RefCountedThreadSafe<Core> {
    public:
     // Construct an AttachmentServiceProxyCore that forwards calls to |wrapped|.
-    explicit Core(const base::WeakPtr<syncer::AttachmentService>& wrapped);
+    explicit Core(const base::WeakPtr<AttachmentService>& wrapped);
 
     // AttachmentService implementation.
     void GetOrDownloadAttachments(