Change PDF scaling factor from double to float.

chrome/service/service_utility_process_host.cc

Index: chrome/service/service_utility_process_host.cc
diff --git a/chrome/service/service_utility_process_host.cc b/chrome/service/service_utility_process_host.cc
index 5ce45c0abb7d63229ad78911ed045355d104226a..f08a3bdf47992cfefdb0422d377e99f7e5893b39 100644
--- a/chrome/service/service_utility_process_host.cc
+++ b/chrome/service/service_utility_process_host.cc
@@ -317,7 +317,7 @@ void ServiceUtilityProcessHost::OnRenderPDFPagesToMetafilesPageCount(
 
 void ServiceUtilityProcessHost::OnRenderPDFPagesToMetafilesPageDone(
     bool success,
-    double scale_factor) {
+    float scale_factor) {
   DCHECK(waiting_for_reply_);
   if (!pdf_to_emf_state_ || !success)
     return OnPDFToEmfFinished(false);
@@ -408,7 +408,7 @@ void ServiceUtilityProcessHost::OnGetPrinterSemanticCapsAndDefaultsFailed(
                  printing::PrinterSemanticCapsAndDefaults()));
 }
 
-bool ServiceUtilityProcessHost::Client::MetafileAvailable(double scale_factor,
+bool ServiceUtilityProcessHost::Client::MetafileAvailable(float scale_factor,
                                                           base::File file) {
   file.Seek(base::File::FROM_BEGIN, 0);
   int64 size = file.GetLength();