Revert of Add SkRasterPipeline blitter. (patchset #18 id:340001 of https://codereview.chromium.org/2146413002/ )

Reason for revert:
Leaking the blitter

https://build.chromium.org/p/client.skia/builders/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-ASAN/builds/7908/steps/test_skia%20on%20Ubuntu/logs/stdio

Original issue's description:
> Add SkRasterPipeline blitter.
>
> This is now pixel-exact with the existing sRGB SW impl as far as I've tested.
>
> BUG=skia:
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2146413002
> CQ_INCLUDE_TRYBOTS=master.client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot
>
> Committed: https://skia.googlesource.com/skia/+/3011e337693a9786f62d8de9ac4b239ad6dbdaca

TBR=reed@google.com,mtklein@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review-Url: https://codereview.chromium.org/2178523002

1 files changed, 2 insertions, 14 deletions

diff --git a/src/core/SkRasterPipeline.cpp b/src/core/SkRasterPipeline.cpp
index c50383af01..899142886c 100644
--- a/src/core/SkRasterPipeline.cpp
+++ b/src/core/SkRasterPipeline.cpp
@@ -22,23 +22,11 @@ void SkRasterPipeline::append(SkRasterPipeline::Fn body_fn, const void* body_ctx
     fTail.push_back({ &JustReturn, const_cast<void*>(tail_ctx) });
 }
 
-void SkRasterPipeline::extend(const SkRasterPipeline& src) {
-    SkASSERT(src.fBody.count() == src.fTail.count());
-
-    Fn body_fn = src.fBodyStart,
-       tail_fn = src.fTailStart;
-    for (int i = 0; i < src.fBody.count(); i++) {
-        this->append(body_fn, src.fBody[i].fCtx,
-                     tail_fn, src.fTail[i].fCtx);
-        body_fn = src.fBody[i].fNext;
-        tail_fn = src.fTail[i].fNext;
-    }
-}
-
-void SkRasterPipeline::run(size_t x, size_t n) {
+void SkRasterPipeline::run(size_t n) {
     // It's fastest to start uninitialized if the compilers all let us.  If not, next fastest is 0.
     Sk4f v;
 
+    size_t x = 0;
     while (n >= 4) {
         fBodyStart(fBody.begin(), x, v,v,v,v, v,v,v,v);
         x += 4;