Upload picture byte size and op count metrics for SKP recording.

Look okay?

{
   "results" : {
      "desk_amazon.skp_1264_3999" : {
         "nonrendering" : {
            "bytes" : 75656,
            "max_ms" : 1.150187,
            "mean_ms" : 1.150187,
            "median_ms" : 1.150187,
            "min_ms" : 1.150187,
            "ops" : 659,
            "options" : {
               "bench_type" : "recording",
               "clip" : "0 0 1000 1000",
               "name" : "desk_amazon.skp",
               "scale" : "1",
               "source_type" : "skp"
            }
         }
      },
...

BUG=skia:

Review URL: https://codereview.chromium.org/773323002
diff --git a/bench/nanobench.cpp b/bench/nanobench.cpp
index 03fabc4..3f8919d 100644
--- a/bench/nanobench.cpp
+++ b/bench/nanobench.cpp
@@ -24,6 +24,7 @@
 #include "SkGraphics.h"
 #include "SkOSFile.h"
 #include "SkPictureRecorder.h"
+#include "SkPictureUtils.h"
 #include "SkString.h"
 #include "SkSurface.h"
 #include "SkTaskGroup.h"
@@ -524,6 +525,8 @@
             SkString name = SkOSPath::Basename(path.c_str());
             fSourceType = "skp";
             fBenchType  = "recording";
+            fSKPBytes = SkPictureUtils::ApproximateBytesUsed(pic);
+            fSKPOps   = pic->approximateOpCount();
             return SkNEW_ARGS(RecordingBench, (name.c_str(), pic.get(), FLAGS_bbh));
         }
 
@@ -578,6 +581,10 @@
                 log->configOption("multi_picture_draw", fUseMPDs[fCurrentUseMPD-1] ? "true" : "false");
             }
         }
+        if (0 == strcmp(fBenchType, "recording")) {
+            log->metric("bytes", fSKPBytes);
+            log->metric("ops",   fSKPOps);
+        }
     }
 
 private:
@@ -588,6 +595,8 @@
     SkTArray<SkString> fSKPs;
     SkTArray<bool>     fUseMPDs;
 
+    double fSKPBytes, fSKPOps;
+
     const char* fSourceType;  // What we're benching: bench, GM, SKP, ...
     const char* fBenchType;   // How we bench it: micro, recording, playback, ...
     int fCurrentRecording;
@@ -723,11 +732,11 @@
                 fill_gpu_options(log.get(), targets[j]->gl);
             }
 #endif
-            log->timer("min_ms",    stats.min);
-            log->timer("median_ms", stats.median);
-            log->timer("mean_ms",   stats.mean);
-            log->timer("max_ms",    stats.max);
-            log->timer("stddev_ms", sqrt(stats.var));
+            log->metric("min_ms",    stats.min);
+            log->metric("median_ms", stats.median);
+            log->metric("mean_ms",   stats.mean);
+            log->metric("max_ms",    stats.max);
+            log->metric("stddev_ms", sqrt(stats.var));
             if (runs++ % FLAGS_flushEvery == 0) {
                 log->flush();
             }