In SkPDFDocument::emitPDF(), stop pre-calculating file offsets.

src/pdf/SkPDFStream.h

Index: src/pdf/SkPDFStream.h
diff --git a/src/pdf/SkPDFStream.h b/src/pdf/SkPDFStream.h
index 7f33c162aac1448c9781adf89b1a735a02622ee7..586b2e8212d3d0706de6be028124d5b0a23c238e 100644
--- a/src/pdf/SkPDFStream.h
+++ b/src/pdf/SkPDFStream.h
@@ -39,10 +39,9 @@ public:
 
     virtual ~SkPDFStream();
 
-    // The SkPDFObject interface.  These two methods use a mutex to
+    // The SkPDFObject interface.  This two method uses a mutex to
     // allow multiple threads to call at the same time.
     virtual void emitObject(SkWStream* stream, SkPDFCatalog* catalog) SK_OVERRIDE;
-    virtual size_t getOutputSize(SkPDFCatalog* catalog, bool indirect);
 
 protected:
     enum State {