use (temp) gpu-imagefilter-cache for applyFilter
BUG=skia:
Review URL: https://codereview.chromium.org/1414653003
diff --git a/src/gpu/SkGpuDevice.h b/src/gpu/SkGpuDevice.h
index 2e8d14e..b2031e8 100644
--- a/src/gpu/SkGpuDevice.h
+++ b/src/gpu/SkGpuDevice.h
@@ -135,6 +135,8 @@
const SkImageFilter::Context&,
SkBitmap* result, SkIPoint* offset);
+ static SkImageFilter::Cache* NewImageFilterCache();
+
protected:
bool onReadPixels(const SkImageInfo&, void*, size_t, int, int) override;
bool onWritePixels(const SkImageInfo&, const void*, size_t, int, int) override;