Remove SkImageFilter::getInputResult(), since its return value is not

src/effects/SkBicubicImageFilter.cpp

Index: src/effects/SkBicubicImageFilter.cpp
diff --git a/src/effects/SkBicubicImageFilter.cpp b/src/effects/SkBicubicImageFilter.cpp
index c10937eaea8fed26fdb96e92a3871d81efa49f88..daa59484fab135982a94ec87267378ed5534367a 100644
--- a/src/effects/SkBicubicImageFilter.cpp
+++ b/src/effects/SkBicubicImageFilter.cpp
@@ -81,7 +81,11 @@ bool SkBicubicImageFilter::onFilterImage(Proxy* proxy,
                                          const SkMatrix& matrix,
                                          SkBitmap* result,
                                          SkIPoint* loc) {
-    SkBitmap src = this->getInputResult(0, proxy, source, matrix, loc);
+    SkBitmap src = source;
+    if (getInput(0) && !getInput(0)->filterImage(proxy, source, matrix, &src, loc)) {
+        return false;
+    }
+
     if (src.config() != SkBitmap::kARGB_8888_Config) {
         return false;
     }