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

chrome/browser/chromeos/printing/ppd_provider_factory.cc

Index: chrome/browser/chromeos/printing/ppd_provider_factory.cc
diff --git a/chrome/browser/chromeos/printing/ppd_provider_factory.cc b/chrome/browser/chromeos/printing/ppd_provider_factory.cc
index 4c06d9a7f3e72ecc17b9d737d103dbe18297a65e..313de15850e36085390aeb2ae5926d8937e37439 100644
--- a/chrome/browser/chromeos/printing/ppd_provider_factory.cc
+++ b/chrome/browser/chromeos/printing/ppd_provider_factory.cc
@@ -18,15 +18,18 @@
 namespace chromeos {
 namespace printing {
 
-std::unique_ptr<PpdProvider> CreateProvider(Profile* profile) {
+scoped_refptr<PpdProvider> CreateProvider(Profile* profile) {
   base::FilePath ppd_cache_path =
       profile->GetPath().Append(FILE_PATH_LITERAL("PPDCache"));
 
-  return PpdProvider::Create(google_apis::GetAPIKey(),
+  auto cache = PpdCache::Create(ppd_cache_path,
+                                content::BrowserThread::GetTaskRunnerForThread(
+                                    content::BrowserThread::CACHE)
+                                    .get());
+
+  return PpdProvider::Create(g_browser_process->GetApplicationLocale(),
                              g_browser_process->system_request_context(),
-                             content::BrowserThread::GetTaskRunnerForThread(
-                                 content::BrowserThread::FILE),
-                             PpdCache::Create(ppd_cache_path));
+                             cache);
 }
 
 }  // namespace printing