imagefilters should take const array

Bug: skia:
Change-Id: I6f069c843ab27b41c4d1e87f76130e2ba2daf048
Reviewed-on: https://skia-review.googlesource.com/20211
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
diff --git a/include/core/SkImageFilter.h b/include/core/SkImageFilter.h
index a6ade97..7999a95 100644
--- a/include/core/SkImageFilter.h
+++ b/include/core/SkImageFilter.h
@@ -269,7 +269,7 @@
         void allocInputs(int count);
     };
 
-    SkImageFilter(sk_sp<SkImageFilter>* inputs, int inputCount, const CropRect* cropRect);
+    SkImageFilter(sk_sp<SkImageFilter> const* inputs, int inputCount, const CropRect* cropRect);
 
     ~SkImageFilter() override;
 
@@ -435,7 +435,7 @@
 
     static void PurgeCache();
 
-    void init(sk_sp<SkImageFilter>* inputs, int inputCount, const CropRect* cropRect);
+    void init(sk_sp<SkImageFilter> const* inputs, int inputCount, const CropRect* cropRect);
 
     bool usesSrcInput() const { return fUsesSrcInput; }
     virtual bool affectsTransparentBlack() const { return false; }
diff --git a/src/core/SkImageFilter.cpp b/src/core/SkImageFilter.cpp
index 453bcfd..3c3aa18 100644
--- a/src/core/SkImageFilter.cpp
+++ b/src/core/SkImageFilter.cpp
@@ -145,7 +145,7 @@
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
-void SkImageFilter::init(sk_sp<SkImageFilter>* inputs,
+void SkImageFilter::init(sk_sp<SkImageFilter> const* inputs,
                          int inputCount,
                          const CropRect* cropRect) {
     fCropRect = cropRect ? *cropRect : CropRect(SkRect(), 0x0);
@@ -160,7 +160,7 @@
     }
 }
 
-SkImageFilter::SkImageFilter(sk_sp<SkImageFilter>* inputs,
+SkImageFilter::SkImageFilter(sk_sp<SkImageFilter> const* inputs,
                              int inputCount,
                              const CropRect* cropRect)
     : fUsesSrcInput(false)