Revert "Change clear() to respect the clip"

include/pdf/SkPDFDevice.h

Index: include/pdf/SkPDFDevice.h
diff --git a/include/pdf/SkPDFDevice.h b/include/pdf/SkPDFDevice.h
index fa0e5128a636a6e168be01928708b61079d8b501..1e09b72b063762d4c1a11b86480d4b3d34ed79c1 100644
--- a/include/pdf/SkPDFDevice.h
+++ b/include/pdf/SkPDFDevice.h
@@ -70,6 +70,8 @@ public:
                        const SkMatrix& initialTransform);
     SK_API virtual ~SkPDFDevice();
 
+    virtual void clear(SkColor color) SK_OVERRIDE;
+
     /** These are called inside the per-device-layer loop for each draw call.
      When these are called, we have already applied any saveLayer operations,
      and are handling any looping from the paint, and any effects from the