helpers for append and insert when the value is a POD.
reduces code-size and perf: fewer refs/unrefs



git-svn-id: http://skia.googlecode.com/svn/trunk@1909 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/pdf/SkPDFStream.cpp b/src/pdf/SkPDFStream.cpp
index 11afa32..790cfae 100644
--- a/src/pdf/SkPDFStream.cpp
+++ b/src/pdf/SkPDFStream.cpp
@@ -33,7 +33,7 @@
         fPlainData = stream;
         fLength = fPlainData->getLength();
     }
-    insert("Length", new SkPDFInt(fLength))->unref();
+    insertInt("Length", fLength);
 }
 
 SkPDFStream::~SkPDFStream() {