Add nanobench tests for BitmapRegionDecoder

bench/SkCodecBenchPriv.h

Index: bench/SkCodecBenchPriv.h
diff --git a/bench/SkCodecBenchPriv.h b/bench/SkCodecBenchPriv.h
new file mode 100644
index 0000000000000000000000000000000000000000..675c3159dd0df55a7d385010379d42052639d5eb
--- /dev/null
+++ b/bench/SkCodecBenchPriv.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkCodecBenchPriv_DEFINED
+#define SkCodecBenchPriv_DEFINED
+
+static const char* color_type_to_str(SkColorType colorType) {

[scroggo, 2015/09/22 12:13:08]

I think this should be inline and not static (see Mike's previous comments)

[msarett, 2015/09/22 15:27:19]

Yes agreed!

Also, I'm renaming this CodecBenchPriv.h

+    switch (colorType) {
+        case kN32_SkColorType:
+            return "N32";
+        case kRGB_565_SkColorType:
+            return "565";
+        case kGray_8_SkColorType:
+            return "Gray8";
+        case kIndex_8_SkColorType:
+            return "Index8";
+        case kAlpha_8_SkColorType:
+            return "Alpha8";
+        default:
+            return "Unknown";
+    }
+}
+
+#endif // SkCodecBenchPriv_DEFINED