Add font substituted metrics for OS other than Linux

pdf/out_of_process_instance.cc

Index: pdf/out_of_process_instance.cc
diff --git a/pdf/out_of_process_instance.cc b/pdf/out_of_process_instance.cc
index eb1c17a022a4d67a78c2a5c83f29e1c109e630a3..0eab6bc8c64b55951a856e2a28c0a58c909d897c 100644
--- a/pdf/out_of_process_instance.cc
+++ b/pdf/out_of_process_instance.cc
@@ -282,9 +282,7 @@ OutOfProcessInstance::OutOfProcessInstance(PP_Instance instance)
       preview_document_load_state_(LOAD_STATE_COMPLETE),
       uma_(this),
       told_browser_about_unsupported_feature_(false),
-#if defined(OS_LINUX)
       font_substitution_reported_(false),
-#endif
       print_preview_page_count_(0),
       last_progress_sent_(0),
       recently_sent_find_update_(false),
@@ -1200,10 +1198,8 @@ void OutOfProcessInstance::DocumentLoadComplete(int page_count) {
   UserMetricsRecordAction("PDF.LoadSuccess");
   uma_.HistogramEnumeration("PDF.DocumentFeature", LOADED_DOCUMENT,
                             FEATURES_COUNT);
-#if defined(OS_LINUX)
   if (!font_substitution_reported_)
     uma_.HistogramEnumeration("PDF.IsFontSubstituted", 0, 2);
-#endif
 
   // Note: If we are in print preview mode the scroll location is retained
   // across document loads so we don't want to scroll again and override it.
@@ -1311,12 +1307,10 @@ void OutOfProcessInstance::DocumentLoadFailed() {
 }
 
 void OutOfProcessInstance::FontSubstituted() {
-#if defined(OS_LINUX)
   if (font_substitution_reported_)
     return;
   font_substitution_reported_ = true;
   uma_.HistogramEnumeration("PDF.IsFontSubstituted", 1, 2);
-#endif
 }
 
 void OutOfProcessInstance::PreviewDocumentLoadFailed() {