pdfviewer: fix typo in sample app

Review URL: https://codereview.chromium.org/22861007

git-svn-id: http://skia.googlecode.com/svn/trunk/gyp@10781 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/SampleApp.gyp b/SampleApp.gyp
index 602264f..0751651 100644
--- a/SampleApp.gyp
+++ b/SampleApp.gyp
@@ -161,7 +161,7 @@
            'SAMPLE_PDF_FILE_VIEWER',
          ],
          'dependencies': [
-           'pdfviewer_lib.gyp:libpdfviewer_lib',
+           'pdfviewer_lib.gyp:pdfviewer_lib',
          ],
          'include_dirs' : [
            '../experimental/PdfViewer/',