Add per-picture logging to render_pictures

This will be helpful for debugging crashes
Review URL: https://codereview.appspot.com/6495112

git-svn-id: http://skia.googlecode.com/svn/trunk@5469 2bbb7eff-a529-9590-31e7-b0007b416f81

tools/render_pictures_main.cpp

@@ -103,6 +103,8 @@ static void render_picture(const SkString& inputPath, const SkString& outputDir,
 
     SkPicture picture(&inputStream);
 
+    SkDebugf("drawing... [%i %i] %s\n", picture.width(), picture.height(),
+             inputPath.c_str());
     renderer.init(&picture);
 
     renderer.render(true);