Reland "Remove support for decoding to kIndex_8"

Original change's description:
> > Remove support for decoding to kIndex_8
> > 
> > Fix up callsites, and remove tests that no longer make sense.
> > 
> > Bug: skia:6828
> > Change-Id: I2548c4b7528b7b1be7412563156f27b52c9d4295
> > Reviewed-on: https://skia-review.googlesource.com/21664
> > Reviewed-by: Derek Sollenberger <djsollen@google.com>
> > Commit-Queue: Leon Scroggins <scroggo@google.com>
> 
> TBR=djsollen@google.com,scroggo@google.com
> 
> Change-Id: I1bc669441f250690884e75a9a61427fdf75c6907
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: skia:6828
> Reviewed-on: https://skia-review.googlesource.com/22120
> Reviewed-by: Leon Scroggins <scroggo@google.com>
> Commit-Queue: Leon Scroggins <scroggo@google.com>

TBR=djsollen@google.com,scroggo@google.com

Bug: skia:6828
Change-Id: I36ff5a11c529d29e8adc95f43b8edc6fd1dbf5b8
Reviewed-on: https://skia-review.googlesource.com/22320
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>

1 files changed, 1 insertions, 4 deletions

diff --git a/bench/CodecBench.cpp b/bench/CodecBench.cpp
index a1788ee0cc..f72294e246 100644
--- a/bench/CodecBench.cpp
+++ b/bench/CodecBench.cpp
@@ -51,20 +51,17 @@ void CodecBench::onDelayedSetup() {
 
 void CodecBench::onDraw(int n, SkCanvas* canvas) {
     std::unique_ptr<SkCodec> codec;
-    SkPMColor colorTable[256];
-    int colorCount;
     SkCodec::Options options;
     if (FLAGS_zero_init) {
         options.fZeroInitialized = SkCodec::kYes_ZeroInitialized;
     }
     for (int i = 0; i < n; i++) {
-        colorCount = 256;
         codec.reset(SkCodec::NewFromData(fData));
 #ifdef SK_DEBUG
         const SkCodec::Result result =
 #endif
         codec->getPixels(fInfo, fPixelStorage.get(), fInfo.minRowBytes(),
-                         &options, colorTable, &colorCount);
+                         &options);
         SkASSERT(result == SkCodec::kSuccess
                  || result == SkCodec::kIncompleteInput);
     }