SkCodec: add wbmp class

src/codec/SkCodec_wbmp.h

Index: src/codec/SkCodec_wbmp.h
diff --git a/src/codec/SkCodec_wbmp.h b/src/codec/SkCodec_wbmp.h
new file mode 100644
index 0000000000000000000000000000000000000000..127761720168746bc3a2360792046d388a584cbc
--- /dev/null
+++ b/src/codec/SkCodec_wbmp.h
@@ -0,0 +1,19 @@
+/*
+ * 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 SkCodec_wbmp_DEFINED
+#define SkCodec_wbmp_DEFINED
+
+class SkCodec;
+class SkStream;
+
+namespace SkWbmpCodec {

[msarett, 2015/03/26 12:37:35]

What is the effect of declaring a namespace?  I'm just curious how this works. 
Is this in place of declaring the class?

[scroggo, 2015/03/26 14:37:57]

Yes. It's mostly the same if all your methods are static. I believe there's some
internal disagreement on the Skia team as to the better way to do it.

[hal.canary, 2015/03/26 17:10:53]

I find that namespace makes it more clear that this is not the data structure.

+bool IsWbmp(SkStream*);
+SkCodec* NewFromStream(SkStream*);
+};
+
+#endif  // SkCodec_wbmp_DEFINED