Have nanobench --verbose mode always just print integer nanoseconds.

Don't know that anyone but me is using this.  Speak up now!

BUG=skia:

NOTREECHECKS=true
R=mtklein@google.com, tfarina@chromium.org

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/599913002
diff --git a/bench/nanobench.cpp b/bench/nanobench.cpp
index 923a0df..21aeef4 100644
--- a/bench/nanobench.cpp
+++ b/bench/nanobench.cpp
@@ -72,12 +72,13 @@
 DEFINE_bool(bbh, true, "Build a BBH for SKPs?");
 
 static SkString humanize(double ms) {
-    if (ms > 1e+3) return SkStringPrintf("%.3gs",  ms/1e3);
-    if (ms < 1e-3) return SkStringPrintf("%.3gns", ms*1e6);
+    if (FLAGS_verbose) return SkStringPrintf("%llu", (uint64_t)(ms*1e6));
+    if (ms > 1e+3)     return SkStringPrintf("%.3gs",  ms/1e3);
+    if (ms < 1e-3)     return SkStringPrintf("%.3gns", ms*1e6);
 #ifdef SK_BUILD_FOR_WIN
-    if (ms < 1)    return SkStringPrintf("%.3gus", ms*1e3);
+    if (ms < 1)        return SkStringPrintf("%.3gus", ms*1e3);
 #else
-    if (ms < 1)    return SkStringPrintf("%.3gµs", ms*1e3);
+    if (ms < 1)        return SkStringPrintf("%.3gµs", ms*1e3);
 #endif
     return SkStringPrintf("%.3gms", ms);
 }