Process Statistics header, add max RSS to render_pdfs

dm/DMReporter.cpp

Index: dm/DMReporter.cpp
diff --git a/dm/DMReporter.cpp b/dm/DMReporter.cpp
index 14f50871021ea42e811e547fc452b48089c2f300..12bcfac0f3f7f233b5a7ebc780f75813ece9f536 100644
--- a/dm/DMReporter.cpp
+++ b/dm/DMReporter.cpp
@@ -3,21 +3,7 @@
 #include "SkDynamicAnnotations.h"
 #include "SkCommonFlags.h"
 #include "OverwriteLine.h"
-
-#if defined(SK_BUILD_FOR_UNIX) || defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_ANDROID)
-    #include <sys/resource.h>
-    static long get_max_rss_kb() {
-        struct rusage ru;
-        getrusage(RUSAGE_SELF, &ru);
-    #if defined(SK_BUILD_FOR_MAC)
-        return ru.ru_maxrss / 1024;  // Darwin reports bytes.
-    #else
-        return ru.ru_maxrss;         // Linux reports kilobytes.
-    #endif
-    }
-#else
-    static long get_max_rss_kb() { return 0; }
-#endif
+#include "ProcStats.h"
 
 namespace DM {
 
@@ -36,8 +22,9 @@ void Reporter::printStatus(SkString name, SkMSec timeMs) const {
         status.appendf(", %d failed", failed);
     }
     if (FLAGS_verbose) {
-        if (long max_rss_kb = get_max_rss_kb()) {
-            status.appendf("\t%4ldM peak", max_rss_kb / 1024);
+        int max_rss_kb = sk_tools::getMaxResidentSetSizeKB();
+        if (max_rss_kb >= 0) {
+            status.appendf("\t%4dM peak", max_rss_kb / 1024);
         }
         status.appendf("\t%5dms\t%s", timeMs, name.c_str());
     }