refactoring for pdf viewer lib

Review URL: https://codereview.chromium.org/17856004

git-svn-id: http://skia.googlecode.com/svn/trunk@9773 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/experimental/PdfViewer/SkPdfUtils.cpp b/experimental/PdfViewer/SkPdfUtils.cpp
index e69de29..29e3548 100644
--- a/experimental/PdfViewer/SkPdfUtils.cpp
+++ b/experimental/PdfViewer/SkPdfUtils.cpp
@@ -0,0 +1,37 @@
+#include "SkPdfUtils.h"
+
+bool ArrayFromDictionary(const PdfMemDocument* pdfDoc,
+                         const PdfDictionary& dict,
+                         const char* key,
+                         const char* abr,
+                         SkPdfArray* data) {return false;}
+
+bool FileSpecFromDictionary(const PdfMemDocument* pdfDoc,
+                         const PdfDictionary& dict,
+                         const char* key,
+                         const char* abr,
+                         SkPdfFileSpec* data) {return false;}
+
+bool StreamFromDictionary(const PdfMemDocument* pdfDoc,
+                         const PdfDictionary& dict,
+                         const char* key,
+                         const char* abr,
+                         SkPdfStream** data);
+
+bool TreeFromDictionary(const PdfMemDocument* pdfDoc,
+                         const PdfDictionary& dict,
+                         const char* key,
+                         const char* abr,
+                         SkPdfTree** data) {return false;}
+
+bool DateFromDictionary(const PdfMemDocument* pdfDoc,
+                         const PdfDictionary& dict,
+                         const char* key,
+                         const char* abr,
+                         SkPdfDate* data) {return false;}
+
+bool FunctionFromDictionary(const PdfMemDocument* pdfDoc,
+                         const PdfDictionary& dict,
+                         const char* key,
+                         const char* abr,
+                         SkPdfFunction* data) {return false;}