As the first step in an effort to improve robustness of the cloud print proxy...

chrome/utility/utility_thread.cc

 // Copyright (c) 2010 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/utility/utility_thread.h"
 
 #include <vector>
 
 #include "base/file_util.h"
 #include "base/path_service.h"
@@ skipping 45 matching lines @@
     IPC_MESSAGE_HANDLER(UtilityMsg_UnpackExtension, OnUnpackExtension)
     IPC_MESSAGE_HANDLER(UtilityMsg_UnpackWebResource, OnUnpackWebResource)
     IPC_MESSAGE_HANDLER(UtilityMsg_ParseUpdateManifest, OnParseUpdateManifest)
     IPC_MESSAGE_HANDLER(UtilityMsg_DecodeImage, OnDecodeImage)
     IPC_MESSAGE_HANDLER(UtilityMsg_RenderPDFPagesToMetafile,
                         OnRenderPDFPagesToMetafile)
     IPC_MESSAGE_HANDLER(UtilityMsg_IDBKeysFromValuesAndKeyPath,
                         OnIDBKeysFromValuesAndKeyPath)
     IPC_MESSAGE_HANDLER(UtilityMsg_BatchMode_Started, OnBatchModeStarted)
     IPC_MESSAGE_HANDLER(UtilityMsg_BatchMode_Finished, OnBatchModeFinished)
+    IPC_MESSAGE_HANDLER(UtilityMsg_GetPrinterCapsAndDefaults,
+                        OnGetPrinterCapsAndDefaults)
   IPC_END_MESSAGE_MAP()
 }
 
 void UtilityThread::OnUnpackExtension(const FilePath& extension_path) {
   ExtensionUnpacker unpacker(extension_path);
   if (unpacker.Run() && unpacker.DumpImagesToFile() &&
       unpacker.DumpMessageCatalogsToFile()) {
     Send(new UtilityHostMsg_UnpackExtension_Succeeded(
        *unpacker.parsed_manifest()));
   } else {
@@ skipping 223 matching lines @@
 }
 
 void UtilityThread::OnBatchModeStarted() {
   batch_mode_ = true;
 }
 
 void UtilityThread::OnBatchModeFinished() {
   ChildProcess::current()->ReleaseProcess();
 }
 
+void UtilityThread::OnGetPrinterCapsAndDefaults(
+    const std::string& printer_name) {
+  scoped_refptr<printing::PrintBackend> print_backend =
+      printing::PrintBackend::CreateInstance(NULL);
+  printing::PrinterCapsAndDefaults printer_info;
+  if (print_backend->GetPrinterCapsAndDefaults(printer_name, &printer_info)) {
+    Send(new UtilityHostMsg_GetPrinterCapsAndDefaults_Succeeded(printer_name,
+                                                                printer_info));
+  } else {
+    Send(new UtilityHostMsg_GetPrinterCapsAndDefaults_Failed(printer_name));
+  }
+  ReleaseProcessIfNeeded();
+}
+
 void UtilityThread::ReleaseProcessIfNeeded() {
   if (!batch_mode_)
     ChildProcess::current()->ReleaseProcess();
 }
+