Completely rewrite the PpdProvider/PpdCache to use the SCS backend. Along the way, clean it up a l…

chromeos/dbus/debug_daemon_client.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 "chromeos/dbus/debug_daemon_client.h"
 
 #include <fcntl.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <unistd.h>
@@ skipping 480 matching lines @@
       const std::string& name,
       const std::string& uri,
       const std::string& ppd_contents,
       const DebugDaemonClient::CupsAddPrinterCallback& callback,
       const base::Closure& error_callback) override {
     dbus::MethodCall method_call(debugd::kDebugdInterface,
                                  debugd::kCupsAddManuallyConfiguredPrinter);
     dbus::MessageWriter writer(&method_call);
     writer.AppendString(name);
     writer.AppendString(uri);
-    writer.AppendString(ppd_contents);
+    writer.AppendArrayOfBytes(
+        reinterpret_cast<const uint8_t*>(ppd_contents.data()),
+        ppd_contents.size());
 
     debugdaemon_proxy_->CallMethod(
         &method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
         base::Bind(&DebugDaemonClientImpl::OnPrinterAdded,
                    weak_ptr_factory_.GetWeakPtr(), callback, error_callback));
   }
 
   void CupsAddAutoConfiguredPrinter(
       const std::string& name,
       const std::string& uri,
@@ skipping 294 matching lines @@
 DebugDaemonClient::EmptyStopAgentTracingCallback() {
   return base::Bind(&EmptyStopAgentTracingCallbackBody);
 }
 
 // static
 DebugDaemonClient* DebugDaemonClient::Create() {
   return new DebugDaemonClientImpl();
 }
 
 }  // namespace chromeos