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/SkPdfGraphicsState.h b/experimental/PdfViewer/SkPdfGraphicsState.h
index 7ed1fd3..0928f44 100644
--- a/experimental/PdfViewer/SkPdfGraphicsState.h
+++ b/experimental/PdfViewer/SkPdfGraphicsState.h
@@ -1,5 +1,12 @@
-#ifndef __DEFINED__SkPdfBasics
-#define __DEFINED__SkPdfBasics
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkPdfGraphicsState_DEFINED
+#define SkPdfGraphicsState_DEFINED
 
 #include "SkCanvas.h"
 #include "SkPaint.h"
@@ -471,4 +478,4 @@
     ~SkPdfContext();
 };
 
-#endif  // __DEFINED__SkPdfBasics
+#endif  // SkPdfGraphicsState_DEFINED