Add libpoppler PDF rasterizer

src/utils/SkPDFRasterizer.h

Index: src/utils/SkPDFRasterizer.h
diff --git a/src/utils/SkPDFRasterizer.h b/src/utils/SkPDFRasterizer.h
new file mode 100644
index 0000000000000000000000000000000000000000..4a4083cc21596112b0ad29157660b6a27c4c7530
--- /dev/null
+++ b/src/utils/SkPDFRasterizer.h
@@ -0,0 +1,15 @@
+/*
+ * Copyright 2013 Google Inc.

[vandebo (ex-Chrome), 2013/08/01 17:49:51]

Should this file be name SkPDFPopplerRasterizer.h ?

[ducky, 2013/08/01 20:40:23]

I actually intended this to be for rasterizing PDF files in general, where
interfaces for multiple backends could live (even though we only use poppler
currently)

+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#ifndef SkPDFRasterizer_DEFINED
+#define SkPDFRasterizer_DEFINED
+
+#include "SkBitmap.h"
+#include "SkStream.h"
+
+bool SkPopplerRasterizePDF(SkStream* pdf, SkBitmap* output);

[vandebo (ex-Chrome), 2013/08/01 17:49:51]

Should it take a page number as an argument?

[ducky, 2013/08/01 20:40:23]

The problem with that then becomes that the caller to this function doesn't know
how many pages there are total, so actually using the page argument becomes a
bit difficult.
This was also based off the Mac renderer interface, which had a hardcoded page 1
as well.
It also makes sense to rasterize a whole document, since for testing purposes,
we're concerned about whole-document accuracy. Though since (I think) no GMs
actually outputs multi-page PDFs, I don't think that code has been necessary so
far.

+
+#endif