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

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

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/drive/drive_api_util.h"
 
 #include <string>
 
 #include "base/files/file.h"
 #include "base/logging.h"
@@ skipping 118 matching lines @@
 std::string CanonicalizeResourceId(const std::string& resource_id) {
   // If resource ID is in the old WAPI format starting with a prefix like
   // "document:", strip it and return the remaining part.
   std::string stripped_resource_id;
   if (RE2::FullMatch(resource_id, "^[a-z-]+(?::|%3A)([\\w-]+)$",
                      &stripped_resource_id))
     return stripped_resource_id;
   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) {
   scoped_ptr<google_apis::ResourceEntry> entry(new google_apis::ResourceEntry);
 
   // ResourceEntry
   entry->set_resource_id(file_resource.file_id());
   entry->set_id(file_resource.file_id());
   if (file_resource.IsDirectory())
     entry->set_kind(google_apis::ResourceEntry::ENTRY_KIND_FOLDER);
@@ skipping 181 matching lines @@
   const std::string extension = base::FilePath(path.Extension()).AsUTF8Unsafe();
   for (size_t i = 0; i < arraysize(kHostedDocumentKinds); ++i) {
     if (extension == kHostedDocumentKinds[i].extension)
       return true;
   }
   return extension == kUnknownHostedDocumentExtension;
 }
 
 }  // namespace util
 }  // namespace drive