Add support for NEON intrinsics to speed up texture compression. We can

src/opts/SkTextureCompression_opts.h

Index: src/opts/SkTextureCompression_opts.h
diff --git a/src/opts/SkTextureCompression_opts.h b/src/opts/SkTextureCompression_opts.h
new file mode 100644
index 0000000000000000000000000000000000000000..e618280835ea5e53c2e363f7fa8ac8c3b74daef7
--- /dev/null
+++ b/src/opts/SkTextureCompression_opts.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright 2014
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkTextureCompression_opts_DEFINED
+#define SkTextureCompression_opts_DEFINED
+
+#include "SkTextureCompressor.h"
+#include "SkImageInfo.h"
+
+SkTextureCompressor::CompressionProc
+SkTextureCompressorGetPlatformProc(SkColorType colorType, SkTextureCompressor::Format fmt);
+
+#endif  // SkTextureCompression_opts_DEFINED