Switch SkPDFStream's internal storage from SkStream to SkData

src/core/SkStreamPriv.h

Index: src/core/SkStreamPriv.h
diff --git a/src/images/SkStreamHelpers.h b/src/core/SkStreamPriv.h
similarity index 69%
rename from src/images/SkStreamHelpers.h
rename to src/core/SkStreamPriv.h
index 008dd8e17a05f75b60e309a44578c2aa0b5c04d3..5b5a73adef0f7368bc6df2159af55e116a9d48fd 100644
--- a/src/images/SkStreamHelpers.h
+++ b/src/core/SkStreamPriv.h
@@ -5,8 +5,8 @@
  * found in the LICENSE file.
  */
 
-#ifndef SkStreamHelpers_DEFINED
-#define SkStreamHelpers_DEFINED
+#ifndef SkStreamPriv_DEFINED
+#define SkStreamPriv_DEFINED
 
 class SkAutoMalloc;
 class SkStream;
@@ -23,14 +23,15 @@ class SkData;
  *  @return size_t Total number of bytes in the SkStream, which is also the
  *      number of bytes pointed to by storage->get(). Returns 0 on failure.
  */
-size_t CopyStreamToStorage(SkAutoMalloc* storage, SkStream* stream);
+size_t SkCopyStreamToStorage(SkAutoMalloc* storage, SkStream* stream);
 
 /**
- *  Copy the provided stream to an SkData variable. Used by SkImageDecoder_libktx.
+ *  Copy the provided stream to an SkData variable.
  *  @param stream SkStream to be copied into data.
- *  @return SkData* The resulting SkData after the copy. This data will have a
- *      ref count of one upon return and belongs to the caller. Returns NULL on failure.
+ *  @return SkData* The resulting SkData after the copy. This data
+ *      will have a ref count of one upon return and belongs to the
+ *      caller. Returns NULL on failure.
  */
-SkData *CopyStreamToData(SkStream* stream);
+SkData *SkCopyStreamToData(SkStream* stream);
 
-#endif // SkStreamHelpers_DEFINED
+#endif  // SkStreamPriv_DEFINED