Add SkEncodedFormat, used by SkCodec.

src/images/SkImageEncoder.cpp

Index: src/images/SkImageEncoder.cpp
diff --git a/src/images/SkImageEncoder.cpp b/src/images/SkImageEncoder.cpp
index a6f109a207102de44368fa74a3271f2072c6c446..c8deff391417a18dce2194ef5a1db944ecbfed8a 100644
--- a/src/images/SkImageEncoder.cpp
+++ b/src/images/SkImageEncoder.cpp
@@ -34,25 +34,26 @@ SkData* SkImageEncoder::encodeData(const SkBitmap& bm, int quality) {
     return NULL;
 }
 
-bool SkImageEncoder::EncodeFile(const char file[], const SkBitmap& bm, Type t,
-                                int quality) {
+bool SkImageEncoder::EncodeFile(const char file[], const SkBitmap& bm,
+                                SkEncodedFormat t, int quality) {
     SkAutoTDelete<SkImageEncoder> enc(SkImageEncoder::Create(t));
     return enc.get() && enc.get()->encodeFile(file, bm, quality);
 }
 
-bool SkImageEncoder::EncodeStream(SkWStream* stream, const SkBitmap& bm, Type t,
-                                  int quality) {
+bool SkImageEncoder::EncodeStream(SkWStream* stream, const SkBitmap& bm,
+                                  SkEncodedFormat t, int quality) {
     SkAutoTDelete<SkImageEncoder> enc(SkImageEncoder::Create(t));
     return enc.get() && enc.get()->encodeStream(stream, bm, quality);
 }
 
-SkData* SkImageEncoder::EncodeData(const SkBitmap& bm, Type t, int quality) {
+SkData* SkImageEncoder::EncodeData(const SkBitmap& bm, SkEncodedFormat t,
+                                   int quality) {
     SkAutoTDelete<SkImageEncoder> enc(SkImageEncoder::Create(t));
     return enc.get() ? enc.get()->encodeData(bm, quality) : NULL;
 }
 
 SkData* SkImageEncoder::EncodeData(const SkImageInfo& info, const void* pixels, size_t rowBytes,
-                                   Type t, int quality) {
+                                   SkEncodedFormat t, int quality) {
     SkBitmap bm;
     if (!bm.installPixels(info, const_cast<void*>(pixels), rowBytes)) {
         return NULL;