Adding 3D lut color filter

src/gpu/GrDrawTarget.cpp

Index: src/gpu/GrDrawTarget.cpp
diff --git a/src/gpu/GrDrawTarget.cpp b/src/gpu/GrDrawTarget.cpp
index 3f1d1c806dc0a3fc50e11dbe0942cd4823704c66..d536822fb87570fcfe497750b5002bc537ee5e9c 100644
--- a/src/gpu/GrDrawTarget.cpp
+++ b/src/gpu/GrDrawTarget.cpp
@@ -1018,6 +1018,7 @@ void GrDrawTargetCaps::reset() {
     fReuseScratchTextures = true;
     fGpuTracingSupport = false;
     fCompressedTexSubImageSupport = false;
+    f3DTexImageSupport = false;
 
     fMapBufferFlags = kNone_MapFlags;
 
@@ -1044,6 +1045,7 @@ GrDrawTargetCaps& GrDrawTargetCaps::operator=(const GrDrawTargetCaps& other) {
     fReuseScratchTextures = other.fReuseScratchTextures;
     fGpuTracingSupport = other.fGpuTracingSupport;
     fCompressedTexSubImageSupport = other.fCompressedTexSubImageSupport;
+    f3DTexImageSupport = other.f3DTexImageSupport;
 
     fMapBufferFlags = other.fMapBufferFlags;
 
@@ -1094,6 +1096,7 @@ SkString GrDrawTargetCaps::dump() const {
     r.appendf("Reuse Scratch Textures       : %s\n", gNY[fReuseScratchTextures]);
     r.appendf("Gpu Tracing Support          : %s\n", gNY[fGpuTracingSupport]);
     r.appendf("Compressed Update Support    : %s\n", gNY[fCompressedTexSubImageSupport]);
+    r.appendf("3D Texture Support           : %s\n", gNY[f3DTexImageSupport]);
     r.appendf("Max Texture Size             : %d\n", fMaxTextureSize);
     r.appendf("Max Render Target Size       : %d\n", fMaxRenderTargetSize);
     r.appendf("Max Sample Count             : %d\n", fMaxSampleCount);