change all factories to return their base-class

will watch DEPS roll to see if there are chrome sites needing updates

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1535353002

TBR=

Review URL: https://codereview.chromium.org/1535353002

3 files changed, 8 insertions, 8 deletions

diff --git a/src/effects/SkDisplacementMapEffect.cpp b/src/effects/SkDisplacementMapEffect.cpp
index a3fff39b46..2b35036bc5 100644
--- a/src/effects/SkDisplacementMapEffect.cpp
+++ b/src/effects/SkDisplacementMapEffect.cpp
@@ -164,12 +164,12 @@ bool channel_selector_type_is_valid(SkDisplacementMapEffect::ChannelSelectorType
 
 ///////////////////////////////////////////////////////////////////////////////
 
-SkDisplacementMapEffect* SkDisplacementMapEffect::Create(ChannelSelectorType xChannelSelector,
-                                                         ChannelSelectorType yChannelSelector,
-                                                         SkScalar scale,
-                                                         SkImageFilter* displacement,
-                                                         SkImageFilter* color,
-                                                         const CropRect* cropRect) {
+SkImageFilter* SkDisplacementMapEffect::Create(ChannelSelectorType xChannelSelector,
+                                               ChannelSelectorType yChannelSelector,
+                                               SkScalar scale,
+                                               SkImageFilter* displacement,
+                                               SkImageFilter* color,
+                                               const CropRect* cropRect) {
     if (!channel_selector_type_is_valid(xChannelSelector) ||
         !channel_selector_type_is_valid(yChannelSelector)) {
         return nullptr;
diff --git a/src/effects/SkEmbossMaskFilter.cpp b/src/effects/SkEmbossMaskFilter.cpp
index 2607e255d9..64afa49447 100644
--- a/src/effects/SkEmbossMaskFilter.cpp
+++ b/src/effects/SkEmbossMaskFilter.cpp
@@ -13,7 +13,7 @@
 #include "SkWriteBuffer.h"
 #include "SkString.h"
 
-SkEmbossMaskFilter* SkEmbossMaskFilter::Create(SkScalar blurSigma, const Light& light) {
+SkMaskFilter* SkEmbossMaskFilter::Create(SkScalar blurSigma, const Light& light) {
     return new SkEmbossMaskFilter(blurSigma, light);
 }
 
diff --git a/src/effects/SkMatrixConvolutionImageFilter.cpp b/src/effects/SkMatrixConvolutionImageFilter.cpp
index a1f23f7a29..a80ba45fdb 100644
--- a/src/effects/SkMatrixConvolutionImageFilter.cpp
+++ b/src/effects/SkMatrixConvolutionImageFilter.cpp
@@ -47,7 +47,7 @@ SkMatrixConvolutionImageFilter::SkMatrixConvolutionImageFilter(
     SkASSERT(kernelOffset.fY >= 0 && kernelOffset.fY < kernelSize.fHeight);
 }
 
-SkMatrixConvolutionImageFilter* SkMatrixConvolutionImageFilter::Create(
+SkImageFilter* SkMatrixConvolutionImageFilter::Create(
     const SkISize& kernelSize,
     const SkScalar* kernel,
     SkScalar gain,