pdfviewer: code cleanup - add licence on files, make replace __DEFINE__foo with foo_DEFINED to match skia project

Review URL: https://codereview.chromium.org/23361009

git-svn-id: http://skia.googlecode.com/svn/trunk@10854 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/experimental/PdfViewer/SkPdfUtils.cpp b/experimental/PdfViewer/SkPdfUtils.cpp
index e3128f6..c77baf4 100644
--- a/experimental/PdfViewer/SkPdfUtils.cpp
+++ b/experimental/PdfViewer/SkPdfUtils.cpp
@@ -1,3 +1,10 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
 #include "SkPdfUtils.h"
 
 bool operator !=(const SkString& first, const char* second) {