[FileManager] Do drive search incrementally

chrome/browser/chromeos/gdata/gdata_operations.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/chromeos/gdata/gdata_operations.h"
 
 #include "base/string_number_conversions.h"
 #include "base/stringprintf.h"
 #include "base/values.h"
 #include "chrome/browser/chromeos/gdata/gdata_util.h"
@@ skipping 52 matching lines @@
 
 const char kUploadContentRange[] = "Content-Range: bytes ";
 const char kUploadContentType[] = "X-Upload-Content-Type: ";
 const char kUploadContentLength[] = "X-Upload-Content-Length: ";
 
 #ifndef NDEBUG
 // Use smaller 'page' size while debugging to ensure we hit feed reload
 // almost always. Be careful not to use something too small on account that
 // have many items because server side 503 error might kick in.
 const int kMaxDocumentsPerFeed = 500;
+const int kMaxDocumentsPerSearchFeed = 50;
 #else
 const int kMaxDocumentsPerFeed = 500;
+const int kMaxDocumentsPerSearchFeed = 50;
 #endif
 
 const char kFeedField[] = "feed";
 
 // Templates for file uploading.
 const char kUploadParamConvertKey[] = "convert";
 const char kUploadParamConvertValue[] = "false";
 const char kUploadResponseLocation[] = "location";
 const char kUploadResponseRange[] = "range";
 
@@ skipping 79 matching lines @@
       directory_resource_id_(directory_resource_id) {
 }
 
 GetDocumentsOperation::~GetDocumentsOperation() {}
 
 void GetDocumentsOperation::SetUrl(const GURL& url) {
   override_url_ = url;
 }
 
 GURL GetDocumentsOperation::GetURL() const {
+  int max_docs = search_string_.empty() ? kMaxDocumentsPerFeed :
+                                          kMaxDocumentsPerSearchFeed;
+
   if (!override_url_.is_empty())
     return AddFeedUrlParams(override_url_,
-                            kMaxDocumentsPerFeed,
+                            max_docs,
                             0,
-                            std::string());
+                            search_string_);
 
   if (start_changestamp_ == 0) {
     return AddFeedUrlParams(FormatDocumentListURL(directory_resource_id_),
-                            kMaxDocumentsPerFeed,
+                            max_docs,
                             0,
                             search_string_);
   }
 
   return AddFeedUrlParams(GURL(kGetChangesListURL),
                           kMaxDocumentsPerFeed,
                           start_changestamp_,
                           std::string());
 }
 
@@ skipping 748 matching lines @@
   OnProcessURLFetchResultsComplete(code == HTTP_SUCCESS);
 }
 
 void GetContactPhotoOperation::RunCallbackOnPrematureFailure(
     GDataErrorCode code) {
   scoped_ptr<std::string> data(new std::string);
   callback_.Run(code, data.Pass());
 }
 
 }  // namespace gdata