Revert 288017 "Parse Drive API responses all at once in the bloc..."

trunk/src/chrome/browser/drive/drive_api_util.cc

Index: trunk/src/chrome/browser/drive/drive_api_util.cc
===================================================================
--- trunk/src/chrome/browser/drive/drive_api_util.cc	(revision 288215)
+++ trunk/src/chrome/browser/drive/drive_api_util.cc	(working copy)
@@ -136,6 +136,29 @@
   return resource_id;
 }
 
+void ParseShareUrlAndRun(const google_apis::GetShareUrlCallback& callback,
+                         google_apis::GDataErrorCode error,
+                         scoped_ptr<base::Value> value) {
+  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+
+  if (!value) {
+    callback.Run(error, GURL());
+    return;
+  }
+
+  // Parsing ResourceEntry is cheap enough to do on UI thread.
+  scoped_ptr<google_apis::ResourceEntry> entry =
+      google_apis::ResourceEntry::ExtractAndParse(*value);
+  if (!entry) {
+    callback.Run(google_apis::GDATA_PARSE_ERROR, GURL());
+    return;
+  }
+
+  const google_apis::Link* share_link =
+      entry->GetLinkByType(google_apis::Link::LINK_SHARE);
+  callback.Run(error, share_link ? share_link->href() : GURL());
+}
+
 scoped_ptr<google_apis::ResourceEntry>
 ConvertFileResourceToResourceEntry(
     const google_apis::FileResource& file_resource) {