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/ImageFilterTest.cpp b/tests/ImageFilterTest.cpp
index 9fd4351b42..b67383682b 100644
--- a/tests/ImageFilterTest.cpp
+++ b/tests/ImageFilterTest.cpp
@@ -55,6 +55,7 @@ public:
         return true;
     }
 
+    SK_TO_STRING_OVERRIDE()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(MatrixTestImageFilter)
 
 protected:
@@ -81,6 +82,13 @@ SkFlattenable* MatrixTestImageFilter::CreateProc(SkReadBuffer& buffer) {
     return SkNEW_ARGS(MatrixTestImageFilter, (reporter, matrix));
 }
 
+#ifndef SK_IGNORE_TO_STRING
+void MatrixTestImageFilter::toString(SkString* str) const {
+    str->appendf("MatrixTestImageFilter: (");
+    str->append(")");
+}
+#endif
+
 static void make_small_bitmap(SkBitmap& bitmap) {
     bitmap.allocN32Pixels(kBitmapSize, kBitmapSize);
     SkCanvas canvas(bitmap);