Outline SkImageFilter Make methods

src/effects/SkComposeImageFilter.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkComposeImageFilter.h"
 
 #include "SkReadBuffer.h"
 #include "SkSpecialImage.h"
 #include "SkWriteBuffer.h"
 
+sk_sp<SkImageFilter> SkComposeImageFilter::Make(sk_sp<SkImageFilter> outer,
+                                                sk_sp<SkImageFilter> inner) {
+    if (!outer) {
+        return inner;
+    }
+    if (!inner) {
+        return outer;
+    }
+    sk_sp<SkImageFilter> inputs[2] = { std::move(outer), std::move(inner) };
+    return sk_sp<SkImageFilter>(new SkComposeImageFilter(inputs));
+}
 
 SkRect SkComposeImageFilter::computeFastBounds(const SkRect& src) const {
     SkImageFilter* outer = this->getInput(0);
     SkImageFilter* inner = this->getInput(1);
 
     return outer->computeFastBounds(inner->computeFastBounds(src));
 }
 
 sk_sp<SkSpecialImage> SkComposeImageFilter::onFilterImage(SkSpecialImage* source,
                                                           const Context& ctx,
@@ skipping 48 matching lines @@
 
     str->appendf("outer: ");
     outer->toString(str);
 
     str->appendf("inner: ");
     inner->toString(str);
 
     str->appendf(")");
 }
 #endif