Revert of Fast path for blurred round rects -- blur a small 9patch rect on the CPU (https://codereview.chromium.org/248613004/)

Reason for revert:
Looks like this causes unit tests to fail with a zero constructor like this one: http://108.170.220.120:10117/builders/Test-Win7-ShuttleA-HD2000-x86-Release/builds/2326/steps/RunTests/logs/stdio

Original issue's description:
> Fast path for blurred round rects -- blur a small 9patch rect on the CPU
> And nonlinearly stretch the resulting texture across proxy geometry.
>
> BUG=
>
> Committed: http://code.google.com/p/skia/source/detail?r=14392

R=bsalomon@google.com, reed@google.com, humper@google.com
TBR=bsalomon@google.com, humper@google.com, reed@google.com
NOTREECHECKS=true
NOTRY=true
BUG=

Author: caryclark@google.com

Review URL: https://codereview.chromium.org/258893010

git-svn-id: http://skia.googlecode.com/svn/trunk@14400 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 12 insertions, 0 deletions

diff --git a/src/images/SkImageDecoder_libwebp.cpp b/src/images/SkImageDecoder_libwebp.cpp
index 02990258eb..4e23e50f57 100644
--- a/src/images/SkImageDecoder_libwebp.cpp
+++ b/src/images/SkImageDecoder_libwebp.cpp
@@ -559,6 +559,15 @@ static void Index8_To_RGB(const uint8_t* in, uint8_t* rgb, int width,
   }
 }
 
+static void Alpha8_To_RGB(const uint8_t* in, uint8_t* rgb, int width,
+                          const SkPMColor* SK_RESTRICT ctable) {
+  const uint8_t* SK_RESTRICT src = (const uint8_t*)in;
+  for (int i = 0; i < width; ++i) {
+      rgb[0] = rgb[1] = rgb[2] = *src++;
+      rgb += 3;
+  }
+}
+
 static ScanlineImporter ChooseImporter(const SkBitmap::Config& config,
                                        bool  hasAlpha,
                                        int*  bpp) {
@@ -585,6 +594,9 @@ static ScanlineImporter ChooseImporter(const SkBitmap::Config& config,
         case SkBitmap::kIndex8_Config:
             *bpp = 3;
             return Index8_To_RGB;
+        case SkBitmap::kA8_Config:
+            *bpp = 3;
+            return Alpha8_To_RGB;
         default:
             return NULL;
     }