gdata: Move ownership of GDataCache to GDataSystemService

chrome/browser/chromeos/gdata/gdata_sync_client.cc

Index: chrome/browser/chromeos/gdata/gdata_sync_client.cc
diff --git a/chrome/browser/chromeos/gdata/gdata_sync_client.cc b/chrome/browser/chromeos/gdata/gdata_sync_client.cc
index 1302e76426d3ce4df4d1224483fc96dc1660f09e..80f7a67fb694b4c0a1e5aa46d2819a44f6fdbcd7 100644
--- a/chrome/browser/chromeos/gdata/gdata_sync_client.cc
+++ b/chrome/browser/chromeos/gdata/gdata_sync_client.cc
@@ -73,9 +73,11 @@ void ScanPinnedDirectory(const FilePath& directory,
 }  // namespace
 
 GDataSyncClient::GDataSyncClient(Profile* profile,
-                                 GDataFileSystemInterface* file_system)
+                                 GDataFileSystemInterface* file_system,
+                                 GDataCache* cache)
     : profile_(profile),
       file_system_(file_system),
+      cache_(cache),
       registrar_(new PrefChangeRegistrar),
       fetch_loop_is_running_(false),
       weak_ptr_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
@@ -120,7 +122,7 @@ void GDataSyncClient::StartInitialScan(const base::Closure& closure) {
       BrowserThread::GetBlockingPool()->PostTaskAndReply(
           FROM_HERE,
           base::Bind(&ScanPinnedDirectory,
-                     file_system_->GetCacheDirectoryPath(
+                     cache_->GetCacheDirectoryPath(
                          GDataCache::CACHE_TYPE_PINNED),
                      resource_ids),
           base::Bind(&GDataSyncClient::OnInitialScanComplete,