Update GrSwizzle to only store key and not string.

Change-Id: Ieaba188e620e5c1f1d423109e628b0ca78f3afe0
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/257394
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
diff --git a/src/gpu/effects/generated/GrAlphaThresholdFragmentProcessor.cpp b/src/gpu/effects/generated/GrAlphaThresholdFragmentProcessor.cpp
index 48be12d..ffcaca1 100644
--- a/src/gpu/effects/generated/GrAlphaThresholdFragmentProcessor.cpp
+++ b/src/gpu/effects/generated/GrAlphaThresholdFragmentProcessor.cpp
@@ -52,7 +52,10 @@
                 args.fInputColor,
                 fragBuilder->getProgramBuilder()->samplerVariable(args.fTexSamplers[0]),
                 sk_TransformedCoords2D_0.c_str(),
-                fragBuilder->getProgramBuilder()->samplerSwizzle(args.fTexSamplers[0]).c_str(),
+                fragBuilder->getProgramBuilder()
+                        ->samplerSwizzle(args.fTexSamplers[0])
+                        .asString()
+                        .c_str(),
                 args.fUniformHandler->getUniformCStr(outerThresholdVar),
                 args.fUniformHandler->getUniformCStr(outerThresholdVar),
                 args.fUniformHandler->getUniformCStr(outerThresholdVar),
diff --git a/src/gpu/effects/generated/GrCircleBlurFragmentProcessor.cpp b/src/gpu/effects/generated/GrCircleBlurFragmentProcessor.cpp
index ccef347..3d5a925 100644
--- a/src/gpu/effects/generated/GrCircleBlurFragmentProcessor.cpp
+++ b/src/gpu/effects/generated/GrCircleBlurFragmentProcessor.cpp
@@ -284,7 +284,10 @@
                 args.fUniformHandler->getUniformCStr(circleDataVar), args.fOutputColor,
                 args.fInputColor,
                 fragBuilder->getProgramBuilder()->samplerVariable(args.fTexSamplers[0]),
-                fragBuilder->getProgramBuilder()->samplerSwizzle(args.fTexSamplers[0]).c_str());
+                fragBuilder->getProgramBuilder()
+                        ->samplerSwizzle(args.fTexSamplers[0])
+                        .asString()
+                        .c_str());
     }
 
 private:
diff --git a/src/gpu/effects/generated/GrMagnifierEffect.cpp b/src/gpu/effects/generated/GrMagnifierEffect.cpp
index 722423a..5a29834 100644
--- a/src/gpu/effects/generated/GrMagnifierEffect.cpp
+++ b/src/gpu/effects/generated/GrMagnifierEffect.cpp
@@ -69,7 +69,10 @@
                 "d.y), 1.0);\n}\n%s = sample(%s, mix(coord, zoom_coord, weight)).%s;\n",
                 args.fOutputColor,
                 fragBuilder->getProgramBuilder()->samplerVariable(args.fTexSamplers[0]),
-                fragBuilder->getProgramBuilder()->samplerSwizzle(args.fTexSamplers[0]).c_str());
+                fragBuilder->getProgramBuilder()
+                        ->samplerSwizzle(args.fTexSamplers[0])
+                        .asString()
+                        .c_str());
     }
 
 private:
diff --git a/src/gpu/effects/generated/GrRRectBlurEffect.cpp b/src/gpu/effects/generated/GrRRectBlurEffect.cpp
index 630c66c..35cf1fe 100644
--- a/src/gpu/effects/generated/GrRRectBlurEffect.cpp
+++ b/src/gpu/effects/generated/GrRRectBlurEffect.cpp
@@ -94,7 +94,10 @@
                 "sample(%s, float2(texCoord)).%s;\n",
                 args.fOutputColor, args.fInputColor,
                 fragBuilder->getProgramBuilder()->samplerVariable(args.fTexSamplers[0]),
-                fragBuilder->getProgramBuilder()->samplerSwizzle(args.fTexSamplers[0]).c_str());
+                fragBuilder->getProgramBuilder()
+                        ->samplerSwizzle(args.fTexSamplers[0])
+                        .asString()
+                        .c_str());
     }
 
 private:
diff --git a/src/gpu/effects/generated/GrRectBlurEffect.cpp b/src/gpu/effects/generated/GrRectBlurEffect.cpp
index 186dcfe..7643406 100644
--- a/src/gpu/effects/generated/GrRectBlurEffect.cpp
+++ b/src/gpu/effects/generated/GrRectBlurEffect.cpp
@@ -69,10 +69,16 @@
                 "sk_FragCoord.y);\n    } else {\n        l = half(sk_FragCoord.x - float(%s.x));\n "
                 "       r = half(float(%s.z) - sk_FragCoord.x);\n        t = half(sk_FragCoord.y - "
                 "float(%s.y));\n        b = half(float(",
-                fragBuilder->getProgramBuilder()->samplerSwizzle(args.fTexSamplers[0]).c_str(),
+                fragBuilder->getProgramBuilder()
+                        ->samplerSwizzle(args.fTexSamplers[0])
+                        .asString()
+                        .c_str(),
                 fragBuilder->getProgramBuilder()->samplerVariable(args.fTexSamplers[0]),
                 args.fUniformHandler->getUniformCStr(invSixSigmaVar),
-                fragBuilder->getProgramBuilder()->samplerSwizzle(args.fTexSamplers[0]).c_str(),
+                fragBuilder->getProgramBuilder()
+                        ->samplerSwizzle(args.fTexSamplers[0])
+                        .asString()
+                        .c_str(),
                 args.fOutputColor, args.fInputColor,
                 rectFVar.isValid() ? args.fUniformHandler->getUniformCStr(rectFVar) : "float4(0)",
                 rectFVar.isValid() ? args.fUniformHandler->getUniformCStr(rectFVar) : "float4(0)",
@@ -93,13 +99,25 @@
                 args.fUniformHandler->getUniformCStr(invSixSigmaVar),
                 args.fUniformHandler->getUniformCStr(invSixSigmaVar),
                 fragBuilder->getProgramBuilder()->samplerVariable(args.fTexSamplers[0]),
-                fragBuilder->getProgramBuilder()->samplerSwizzle(args.fTexSamplers[0]).c_str(),
+                fragBuilder->getProgramBuilder()
+                        ->samplerSwizzle(args.fTexSamplers[0])
+                        .asString()
+                        .c_str(),
                 fragBuilder->getProgramBuilder()->samplerVariable(args.fTexSamplers[0]),
-                fragBuilder->getProgramBuilder()->samplerSwizzle(args.fTexSamplers[0]).c_str(),
+                fragBuilder->getProgramBuilder()
+                        ->samplerSwizzle(args.fTexSamplers[0])
+                        .asString()
+                        .c_str(),
                 fragBuilder->getProgramBuilder()->samplerVariable(args.fTexSamplers[0]),
-                fragBuilder->getProgramBuilder()->samplerSwizzle(args.fTexSamplers[0]).c_str(),
+                fragBuilder->getProgramBuilder()
+                        ->samplerSwizzle(args.fTexSamplers[0])
+                        .asString()
+                        .c_str(),
                 fragBuilder->getProgramBuilder()->samplerVariable(args.fTexSamplers[0]),
-                fragBuilder->getProgramBuilder()->samplerSwizzle(args.fTexSamplers[0]).c_str(),
+                fragBuilder->getProgramBuilder()
+                        ->samplerSwizzle(args.fTexSamplers[0])
+                        .asString()
+                        .c_str(),
                 args.fOutputColor, args.fInputColor);
     }
 
diff --git a/src/gpu/effects/generated/GrSimpleTextureEffect.cpp b/src/gpu/effects/generated/GrSimpleTextureEffect.cpp
index fd8362a..9c1ad14 100644
--- a/src/gpu/effects/generated/GrSimpleTextureEffect.cpp
+++ b/src/gpu/effects/generated/GrSimpleTextureEffect.cpp
@@ -31,7 +31,10 @@
                 "%s = %s * sample(%s, %s).%s;\n", args.fOutputColor, args.fInputColor,
                 fragBuilder->getProgramBuilder()->samplerVariable(args.fTexSamplers[0]),
                 sk_TransformedCoords2D_0.c_str(),
-                fragBuilder->getProgramBuilder()->samplerSwizzle(args.fTexSamplers[0]).c_str());
+                fragBuilder->getProgramBuilder()
+                        ->samplerSwizzle(args.fTexSamplers[0])
+                        .asString()
+                        .c_str());
     }
 
 private: