Create fragment processor for performing input color blend with child processor

gyp/gpu.gypi

Index: gyp/gpu.gypi
diff --git a/gyp/gpu.gypi b/gyp/gpu.gypi
index 70a518f34d02dd82acf3271adba440e767ee3697..d0e8983c7d396d4dce6ed7fa6c9b09d815623a54 100644
--- a/gyp/gpu.gypi
+++ b/gyp/gpu.gypi
@@ -72,6 +72,7 @@
       '<(skia_src_path)/gpu/GrBatchFlushState.h',
       '<(skia_src_path)/gpu/GrBatchTest.cpp',
       '<(skia_src_path)/gpu/GrBatchTest.h',
+      '<(skia_src_path)/gpu/GrBlend.cpp',
       '<(skia_src_path)/gpu/GrBlurUtils.cpp',
       '<(skia_src_path)/gpu/GrBlurUtils.h',
       '<(skia_src_path)/gpu/GrBufferAllocPool.cpp',
@@ -138,6 +139,7 @@
       '<(skia_src_path)/gpu/GrProcessor.cpp',
       '<(skia_src_path)/gpu/GrProcessorUnitTest.cpp',
       '<(skia_src_path)/gpu/GrProcessorDataManager.cpp',
+      '<(skia_src_path)/gpu/GrProcessorUnitTest.cpp',
       '<(skia_src_path)/gpu/GrProcOptInfo.cpp',
       '<(skia_src_path)/gpu/GrProcOptInfo.h',
       '<(skia_src_path)/gpu/GrGpuResourceRef.cpp',
@@ -245,7 +247,6 @@
       '<(skia_src_path)/gpu/effects/GrExtractAlphaFragmentProcessor.cpp',
       '<(skia_src_path)/gpu/effects/GrCoverageSetOpXP.cpp',
       '<(skia_src_path)/gpu/effects/GrCustomXfermode.cpp',
-      '<(skia_src_path)/gpu/effects/GrCustomXfermodePriv.h',
       '<(skia_src_path)/gpu/effects/GrBezierEffect.cpp',
       '<(skia_src_path)/gpu/effects/GrBezierEffect.h',
       '<(skia_src_path)/gpu/effects/GrConvolutionEffect.cpp',
@@ -285,8 +286,8 @@
 
       '<(skia_src_path)/gpu/gl/GrGLAssembleInterface.cpp',
       '<(skia_src_path)/gpu/gl/GrGLAssembleInterface.h',
-      '<(skia_src_path)/gpu/gl/GrGLBlend.cpp',
-      '<(skia_src_path)/gpu/gl/GrGLBlend.h',
+      '<(skia_src_path)/gpu/gl/GrGLSLBlend.cpp',
+      '<(skia_src_path)/gpu/gl/GrGLSLBlend.h',
       '<(skia_src_path)/gpu/gl/GrGLBufferImpl.cpp',
       '<(skia_src_path)/gpu/gl/GrGLBufferImpl.h',
       '<(skia_src_path)/gpu/gl/GrGLCaps.cpp',