Remove SkImageFilter::getInputResult(), since its return value is not
style-compliant, and doesn't allow us to abort on failure.

R=reed@google.com

Committed: https://code.google.com/p/skia/source/detail?r=9245

Review URL: https://codereview.chromium.org/15600003

git-svn-id: http://skia.googlecode.com/svn/trunk@9274 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/effects/SkMatrixConvolutionImageFilter.cpp b/src/effects/SkMatrixConvolutionImageFilter.cpp
index 6368096..99e8368 100644
--- a/src/effects/SkMatrixConvolutionImageFilter.cpp
+++ b/src/effects/SkMatrixConvolutionImageFilter.cpp
@@ -203,7 +203,11 @@
                                                    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;
     }