Clean up a few more unused globals.

chrome/browser/extensions/api/image_writer_private/error_messages.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 "chrome/browser/extensions/api/image_writer_private/error_messages.h"
 
 namespace extensions {
 namespace image_writer {
 namespace error {
 
 const char kAborted[] = "Aborted.";
 const char kCloseDevice[] = "Failed to close usb device file.";
 const char kCloseImage[] = "Failed to close image file.";
 const char kDeviceList[] = "Failed to retrieve device list.";
 const char kDeviceMD5[] = "Failed to calculate MD5 sum for written image.";
 const char kDownloadCancelled[] = "The download was cancelled.";
 const char kDownloadHash[] = "Downloaded image had incorrect MD5 sum.";
 const char kDownloadInterrupted[] = "Download interrupted.";
 const char kDownloadMD5[] = "Failed to calculate MD5 sum for download.";
 const char kEmptyUnzip[] = "Unzipped image contained no files.";
 const char kFileOperationsNotImplemented[] = "Write-from file not implemented.";
 const char kImageBurnerError[] = "Error contacting Image Burner process.";
 const char kImageMD5[] = "Failed to calculate MD5 sum for unzipped image.";
 const char kImageNotFound[] = "Unpacked image not found.";
 const char kImageSize[] = "Could not determine image size.";
-const char kInvalidFileEntry[] = "Invalid file entry.";
 const char kInvalidUrl[] = "Invalid URL provided.";
 const char kMultiFileZip[] = "More than one file in zip."
                              " Unsure how to proceed.";
 const char kNoOperationInProgress[] = "No operation in progress.";
 const char kOpenDevice[] = "Failed to open usb device for writing.";
 const char kOpenImage[] = "Failed to open image.";
 const char kOperationAlreadyInProgress[] = "Operation already in progress.";
 const char kPrematureEndOfFile[] = "Premature end of image file.";
 const char kReadImage[] = "Failed to read image.";
 const char kTempDir[] = "Unable to create temporary directory.";
 const char kTempFile[] = "Unable to create temporary file.";
 const char kUnsupportedOperation[] = "Unsupported operation.";
 const char kUnzip[] = "Unzip failed.";
 const char kWriteHash[] = "Writing image resulted in incorrect hash.";
 const char kWriteImage[] = "Writing image to device failed.";
 
 } // namespace error
 } // namespace image_writer
 } // namespace extensions