SkPDF/Device/ImageFilter: Fix ImageFilter fallback code

Broken in https://chromium.googlesource.com/skia/+/76033be

I have confirmed that this fixes 470083.

BUG=470083

Review URL: https://codereview.chromium.org/1080923004

2 files changed, 4 insertions, 2 deletions

diff --git a/src/core/SkDeviceImageFilterProxy.h b/src/core/SkDeviceImageFilterProxy.h
index 06df759bc3..dcf12f7c40 100644
--- a/src/core/SkDeviceImageFilterProxy.h
+++ b/src/core/SkDeviceImageFilterProxy.h
@@ -22,7 +22,8 @@ public:
     SkBaseDevice* createDevice(int w, int h) override {
         SkBaseDevice::CreateInfo cinfo(SkImageInfo::MakeN32Premul(w, h),
                                        SkBaseDevice::kNever_TileUsage,
-                                       kUnknown_SkPixelGeometry);
+                                       kUnknown_SkPixelGeometry,
+                                       true /*forImageFilter*/);
         return fDevice->onCreateDevice(cinfo, NULL);
     }
     bool canHandleImageFilter(const SkImageFilter* filter) override {
diff --git a/src/pdf/SkPDFDevice.cpp b/src/pdf/SkPDFDevice.cpp
index 5167474f10..1b16397512 100644
--- a/src/pdf/SkPDFDevice.cpp
+++ b/src/pdf/SkPDFDevice.cpp
@@ -577,7 +577,8 @@ static bool not_supported_for_layers(const SkPaint& layerPaint) {
 }
 
 SkBaseDevice* SkPDFDevice::onCreateDevice(const CreateInfo& cinfo, const SkPaint* layerPaint) {
-    if (layerPaint && not_supported_for_layers(*layerPaint)) {
+    if (cinfo.fForImageFilter ||
+        (layerPaint && not_supported_for_layers(*layerPaint))) {
         return SkBitmapDevice::Create(cinfo.fInfo);
     }
     SkISize size = SkISize::Make(cinfo.fInfo.width(), cinfo.fInfo.height());