Remove dependency to file_system_operation_impl.h from chrome/

chrome/browser/sync_file_system/local/syncable_file_operation_runner_unittest.cc

 // Copyright 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 <string>
 
 #include "base/basictypes.h"
 #include "base/file_util.h"
 #include "base/location.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 316 matching lines @@
 
   ResetCallbackStatus();
 
   // This shouldn't crash nor leak memory.
   sync_context_->ShutdownOnUIThread();
   sync_context_ = NULL;
   base::MessageLoop::current()->RunUntilIdle();
   EXPECT_EQ(2, callback_count_);
 }
 
-// Test if CopyInForeignFile runs cooperatively with other Sync operations
-// when it is called directly via AsFileSystemOperationImpl.
+// Test if CopyInForeignFile runs cooperatively with other Sync operations.
 TEST_F(SyncableFileOperationRunnerTest, CopyInForeignFile) {
   const std::string kTestData("test data");
 
   base::FilePath temp_path;
   ASSERT_TRUE(CreateTempFile(&temp_path));
   ASSERT_EQ(static_cast<int>(kTestData.size()),
             file_util::WriteFile(
                 temp_path, kTestData.data(), kTestData.size()));
 
   sync_status()->StartSyncing(URL(kFile));
@@ skipping 38 matching lines @@
       file_system_.operation_runner()->Truncate(
           URL(kFile), 10,
           ExpectStatus(FROM_HERE, base::PLATFORM_FILE_OK));
   file_system_.operation_runner()->Cancel(
       id, ExpectStatus(FROM_HERE, base::PLATFORM_FILE_ERROR_INVALID_OPERATION));
   base::MessageLoop::current()->RunUntilIdle();
   EXPECT_EQ(2, callback_count_);
 }
 
 }  // namespace sync_file_system