Misc cleanups in Drive code.

chrome/browser/chromeos/drive/search_metadata.cc

 // Copyright (c) 2013 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/chromeos/drive/search_metadata.h"
 
 #include <algorithm>
 #include "base/bind.h"
 #include "base/string_util.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 95 matching lines @@
             base::Bind(&SearchMetadataHelper::DidReadDirectoryByPath,
                        weak_ptr_factory_.GetWeakPtr(),
                        current_path));
       }
     }
 
     if (num_pending_reads_ == 0) {
       // Search is complete. Send the result to the callback.
       std::sort(results_->begin(), results_->end(), &CompareByTimestamp);
       if (results_->size() > static_cast<size_t>(at_most_num_matches_)) {
-        // Don't use resize() as it requres a default constructor.
+        // Don't use resize() as it requires a default constructor.
         results_->erase(results_->begin() + at_most_num_matches_,
                         results_->end());
       }
       callback_.Run(DRIVE_FILE_OK, results_.Pass());
       delete this;
     }
   }
 
   DriveFileSystemInterface* file_system_;
   const std::string query_;
@@ skipping 59 matching lines @@
   if (num_matches == 0)
     return false;
 
   std::string remaining_piece = text.substr(cursor);
   highlighted_text->append(net::EscapeForHTML(remaining_piece));
 
   return true;
 }
 
 }  // namespace drive