[FileManager] Do drive search incrementally

chrome/browser/chromeos/gdata/gdata_file_system_unittest.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 <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
@@ skipping 40 matching lines @@
   const bool is_directory;
 };
 
 // Callback to GDataFileSystem::Search used in ContentSearch tests.
 // Verifies returned vector of results.
 void DriveSearchCallback(
     MessageLoop* message_loop,
     const SearchResultPair* expected_results,
     size_t expected_results_size,
     GDataFileError error,
+    const GURL& next_feed,
     scoped_ptr<std::vector<SearchResultInfo> > results) {
   ASSERT_TRUE(results.get());
   ASSERT_EQ(expected_results_size, results->size());
 
   for (size_t i = 0; i < results->size(); i++) {
     EXPECT_EQ(FilePath(expected_results[i].path),
               results->at(i).path);
     EXPECT_EQ(expected_results[i].is_directory,
               results->at(i).is_directory);
   }
@@ skipping 2345 matching lines @@
       .Times(1);
 
   const SearchResultPair expected_results[] = {
     { "drive/Directory 1/SubDirectory File 1.txt", false },
     { "drive/Directory 1", true }
   };
 
   SearchCallback callback = base::Bind(&DriveSearchCallback,
       &message_loop_, expected_results, 2u);
 
-  file_system_->Search("foo", callback);
+  file_system_->Search("foo", GURL(), callback);
   message_loop_.Run();  // Wait to get our result.
 }
 
 TEST_F(GDataFileSystemTest, ContentSearchEmptyResult) {
   LoadRootFeedDocument("root_feed.json");
 
   mock_doc_service_->set_search_result("empty_feed.json");
 
   EXPECT_CALL(*mock_doc_service_, GetDocuments(Eq(GURL()), _, "foo", _, _))
       .Times(1);
 
   const SearchResultPair* expected_results = NULL;
 
   SearchCallback callback = base::Bind(&DriveSearchCallback,
       &message_loop_, expected_results, 0u);
 
-  file_system_->Search("foo", callback);
+  file_system_->Search("foo", GURL(), callback);
   message_loop_.Run();  // Wait to get our result.
 }
 
 TEST_F(GDataFileSystemTest, GetAvailableSpace) {
   GetAvailableSpaceCallback callback =
       base::Bind(&CallbackHelper::GetAvailableSpaceCallback,
                  callback_helper_.get());
 
   EXPECT_CALL(*mock_doc_service_, GetAccountMetadata(_));
 
@@ skipping 102 matching lines @@
 
   // Try to close the same file twice.
   file_system_->CloseFile(kFileInRoot, close_file_callback);
   message_loop_.Run();
 
   // It must fail.
   EXPECT_EQ(GDATA_FILE_ERROR_NOT_FOUND, callback_helper_->last_error_);
 }
 
 }   // namespace gdata