Fixed C++ type conversion.

printing/backend/cups_helper.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 "printing/backend/cups_helper.h"
 
 #include <cups/ppd.h>
 
 #include "base/base_paths.h"
 #include "base/file_util.h"
@@ skipping 18 matching lines @@
 const char kColorMode[] = "ColorMode";
 const char kProcessColorModel[] = "ProcessColorModel";
 const char kPrintoutMode[] = "PrintoutMode";
 const char kDraftGray[] = "Draft.Gray";
 const char kHighGray[] = "High.Gray";
 
 const char kDuplex[] = "Duplex";
 const char kDuplexNone[] = "None";
 const char kPageSize[] = "PageSize";
 
-const double kMicronsPerPoint = kHundrethsMMPerInch / kPointsPerInch * 10;
+const double kMicronsPerPoint = 10.0f * kHundrethsMMPerInch / kPointsPerInch;
 
 #if !defined(OS_MACOSX)
 void ParseLpOptions(const base::FilePath& filepath,
                     const std::string& printer_name,
                     int* num_options, cups_option_t** options) {
   std::string content;
   if (!base::ReadFileToString(filepath, &content))
     return;
 
   const char kDest[] = "dest";
@@ skipping 385 matching lines @@
   }
 
   ppdClose(ppd);
   base::DeleteFile(ppd_file_path, false);
 
   *printer_info = caps;
   return true;
 }
 
 }  // namespace printing