onCreateDevice -> NULL now means the caller should create its own (bitmap) device

src/pdf/SkPDFDevice.cpp

Index: src/pdf/SkPDFDevice.cpp
diff --git a/src/pdf/SkPDFDevice.cpp b/src/pdf/SkPDFDevice.cpp
index 88f9b810b608e5508ac0747c41b6b592377bbf1e..2dbad5f411403e800646f63d73d071957176eadc 100644
--- a/src/pdf/SkPDFDevice.cpp
+++ b/src/pdf/SkPDFDevice.cpp
@@ -8,7 +8,6 @@
 #include "SkPDFDevice.h"
 
 #include "SkAnnotation.h"
-#include "SkBitmapDevice.h"
 #include "SkColor.h"
 #include "SkClipStack.h"
 #include "SkData.h"
@@ -579,7 +578,7 @@ static bool not_supported_for_layers(const SkPaint& layerPaint) {
 SkBaseDevice* SkPDFDevice::onCreateDevice(const CreateInfo& cinfo, const SkPaint* layerPaint) {
     if (cinfo.fForImageFilter ||
         (layerPaint && not_supported_for_layers(*layerPaint))) {
-        return SkBitmapDevice::Create(cinfo.fInfo);
+        return NULL;
     }
     SkISize size = SkISize::Make(cinfo.fInfo.width(), cinfo.fInfo.height());
     return SkPDFDevice::Create(size, fRasterDpi, fCanon);