Linux: clean up the usage of "use_cups" gyp switch:

chrome/browser/ui/webui/print_preview_handler.cc

 // Copyright (c) 2011 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/ui/webui/print_preview_handler.h"
 
 #include <string>
 
 #include "base/i18n/file_util_icu.h"
 #include "base/json/json_reader.h"
@@ skipping 11 matching lines @@
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/print_messages.h"
 #include "content/browser/browser_thread.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "printing/backend/print_backend.h"
 #include "printing/metafile.h"
 #include "printing/metafile_impl.h"
 #include "printing/print_job_constants.h"
 
-#if defined(OS_POSIX) && !defined(OS_CHROMEOS)
+#if defined(USE_CUPS)
 #include <cups/cups.h>
 
 #include "base/file_util.h"
 #endif
 
 namespace {
 
 const bool kColorDefaultValue = false;
 const bool kLandscapeDefaultValue = false;
 
 const char kDisableColorOption[] = "disableColorOption";
 const char kSetColorAsDefault[] = "setColorAsDefault";
 
-#if defined(OS_POSIX) && !defined(OS_CHROMEOS)
+#if defined(USE_CUPS)
 const char kColorDevice[] = "ColorDevice";
 #elif defined(OS_WIN)
 const char kPskColor[] = "psk:Color";
 #endif
 
 // Get the print job settings dictionary from |args|. The caller takes
 // ownership of the returned DictionaryValue. Returns NULL on failure.
 DictionaryValue* GetSettingsDictionary(const ListValue* args) {
   std::string json_str;
   if (!args->GetString(0, &json_str)) {
@@ skipping 62 matching lines @@
   }
 
   void GetPrinterCapabilities(const std::string& printer_name) {
     printing::PrinterCapsAndDefaults printer_info;
     bool supports_color = true;
     if (!print_backend_->GetPrinterCapsAndDefaults(printer_name,
                                                    &printer_info)) {
       return;
     }
 
-  #if defined(OS_POSIX) && !defined(OS_CHROMEOS)
+#if defined(USE_CUPS)
     FilePath ppd_file_path;
     if (!file_util::CreateTemporaryFile(&ppd_file_path))
       return;
 
     int data_size = printer_info.printer_capabilities.length();
     if (data_size != file_util::WriteFile(
                          ppd_file_path,
                          printer_info.printer_capabilities.data(),
                          data_size)) {
       file_util::Delete(ppd_file_path, false);
       return;
     }
 
     ppd_file_t* ppd = ppdOpenFile(ppd_file_path.value().c_str());
     if (ppd) {
       ppd_attr_t* attr = ppdFindAttr(ppd, kColorDevice, NULL);
       if (attr && attr->value)
         supports_color = ppd->color_device;
       ppdClose(ppd);
     }
     file_util::Delete(ppd_file_path, false);
-  #elif defined(OS_WIN)
+#elif defined(OS_WIN)
     // According to XPS 1.0 spec, only color printers have psk:Color.
     // Therefore we don't need to parse the whole XML file, we just need to
     // search the string.  The spec can be found at:
     // http://msdn.microsoft.com/en-us/windows/hardware/gg463431.
     supports_color = (printer_info.printer_capabilities.find(kPskColor) !=
                       std::string::npos);
-  #elif defined(OS_CHROMEOS)
-    NOTIMPLEMENTED();
-  #endif
+#else
+  NOTIMPLEMENTED();
+#endif
 
     DictionaryValue settings_info;
     settings_info.SetBoolean(kDisableColorOption, !supports_color);
     settings_info.SetBoolean(kSetColorAsDefault, false);
     BrowserThread::PostTask(
         BrowserThread::UI, FROM_HERE,
         NewRunnableMethod(this,
                           &PrintSystemTaskProxy::SendPrinterCapabilities,
                           settings_info.DeepCopy()));
   }
@@ skipping 232 matching lines @@
   metafile->InitFromData(data.first->memory(), data.second);
 
   // Updating last_saved_path_ to the newly selected folder.
   *last_saved_path_ = path.DirName();
 
   PrintToPdfTask* task = new PrintToPdfTask(metafile, path);
   BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE, task);
 
   ClosePrintPreviewTab();
 }