Add toString methods to SkImageFilter-derived classes

This isn't definitive but at least makes something show up in the debugger.

Review URL: https://codereview.chromium.org/789163006

1 files changed, 8 insertions, 0 deletions

diff --git a/tests/PDFPrimitivesTest.cpp b/tests/PDFPrimitivesTest.cpp
index ca18b2aebf..3f539e3843 100644
--- a/tests/PDFPrimitivesTest.cpp
+++ b/tests/PDFPrimitivesTest.cpp
@@ -443,6 +443,7 @@ public:
         *result = src;
         return true;
     }
+    SK_TO_STRING_OVERRIDE()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(DummyImageFilter)
     bool visited() const { return fVisited; }
 
@@ -456,6 +457,13 @@ SkFlattenable* DummyImageFilter::CreateProc(SkReadBuffer& buffer) {
     return SkNEW_ARGS(DummyImageFilter, (visited));
 }
 
+#ifndef SK_IGNORE_TO_STRING
+void DummyImageFilter::toString(SkString* str) const {
+    str->appendf("DummyImageFilter: (");
+    str->append(")");
+}
+#endif
+
 };
 
 // Check that PDF rendering of image filters successfully falls back to