diff --git a/dm/DMSrcSink.cpp b/dm/DMSrcSink.cpp
index 5667f41..93877c1 100644
--- a/dm/DMSrcSink.cpp
+++ b/dm/DMSrcSink.cpp
@@ -1507,12 +1507,9 @@
             break;
         case SkCommandLineConfigGpu::SurfType::kBackendRenderTarget:
             if (1 == fSampleCount) {
-                auto srgbEncoded = info.colorSpace() && info.colorSpace()->gammaCloseToSRGB()
-                                           ? GrSRGBEncoded::kYes
-                                           : GrSRGBEncoded::kNo;
                 auto colorType = SkColorTypeToGrColorType(info.colorType());
                 backendRT = context->contextPriv().getGpu()->createTestingOnlyBackendRenderTarget(
-                        info.width(), info.height(), colorType, srgbEncoded);
+                        info.width(), info.height(), colorType);
                 surface = SkSurface::MakeFromBackendRenderTarget(
                         context, backendRT, kBottomLeft_GrSurfaceOrigin, info.colorType(),
                         info.refColorSpace(), &props);
diff --git a/src/gpu/GrGpu.h b/src/gpu/GrGpu.h
index 7ab7995..e6001b1 100644
--- a/src/gpu/GrGpu.h
+++ b/src/gpu/GrGpu.h
@@ -355,8 +355,8 @@
      */
     virtual void deleteTestingOnlyBackendTexture(const GrBackendTexture&) = 0;
 
-    virtual GrBackendRenderTarget createTestingOnlyBackendRenderTarget(int w, int h, GrColorType,
-                                                                       GrSRGBEncoded) = 0;
+    virtual GrBackendRenderTarget createTestingOnlyBackendRenderTarget(int w, int h,
+                                                                       GrColorType) = 0;
 
     virtual void deleteTestingOnlyBackendRenderTarget(const GrBackendRenderTarget&) = 0;
 
diff --git a/src/gpu/gl/GrGLGpu.cpp b/src/gpu/gl/GrGLGpu.cpp
index bc63641..74ee2be 100644
--- a/src/gpu/gl/GrGLGpu.cpp
+++ b/src/gpu/gl/GrGLGpu.cpp
@@ -3986,13 +3986,12 @@
 }
 
 GrBackendRenderTarget GrGLGpu::createTestingOnlyBackendRenderTarget(int w, int h,
-                                                                    GrColorType colorType,
-                                                                    GrSRGBEncoded srgbEncoded) {
+                                                                    GrColorType colorType) {
     if (w > this->caps()->maxRenderTargetSize() || h > this->caps()->maxRenderTargetSize()) {
         return GrBackendRenderTarget();  // invalid
     }
     this->handleDirtyContext();
-    auto config = GrColorTypeToPixelConfig(colorType, srgbEncoded);
+    auto config = GrColorTypeToPixelConfig(colorType, GrSRGBEncoded::kNo);
     GrGLenum colorBufferFormat;
     if (!this->glCaps().getRenderbufferFormat(config, &colorBufferFormat)) {
         return {};
diff --git a/src/gpu/gl/GrGLGpu.h b/src/gpu/gl/GrGLGpu.h
index 9097cda..531207c 100644
--- a/src/gpu/gl/GrGLGpu.h
+++ b/src/gpu/gl/GrGLGpu.h
@@ -139,8 +139,7 @@
     bool isTestingOnlyBackendTexture(const GrBackendTexture&) const override;
     void deleteTestingOnlyBackendTexture(const GrBackendTexture&) override;
 
-    GrBackendRenderTarget createTestingOnlyBackendRenderTarget(int w, int h, GrColorType,
-                                                               GrSRGBEncoded) override;
+    GrBackendRenderTarget createTestingOnlyBackendRenderTarget(int w, int h, GrColorType) override;
 
     void deleteTestingOnlyBackendRenderTarget(const GrBackendRenderTarget&) override;
 
diff --git a/src/gpu/mock/GrMockGpu.cpp b/src/gpu/mock/GrMockGpu.cpp
index 59c04af..6543674 100644
--- a/src/gpu/mock/GrMockGpu.cpp
+++ b/src/gpu/mock/GrMockGpu.cpp
@@ -216,9 +216,8 @@
 }
 
 GrBackendRenderTarget GrMockGpu::createTestingOnlyBackendRenderTarget(int w, int h,
-                                                                      GrColorType colorType,
-                                                                      GrSRGBEncoded srgbEncoded) {
-    auto config = GrColorTypeToPixelConfig(colorType, srgbEncoded);
+                                                                      GrColorType colorType) {
+    auto config = GrColorTypeToPixelConfig(colorType, GrSRGBEncoded::kNo);
     if (kUnknown_GrPixelConfig == config) {
         return {};
     }
diff --git a/src/gpu/mock/GrMockGpu.h b/src/gpu/mock/GrMockGpu.h
index a8ec3aa..cbd19f3 100644
--- a/src/gpu/mock/GrMockGpu.h
+++ b/src/gpu/mock/GrMockGpu.h
@@ -110,8 +110,7 @@
     bool isTestingOnlyBackendTexture(const GrBackendTexture&) const override;
     void deleteTestingOnlyBackendTexture(const GrBackendTexture&) override;
 
-    GrBackendRenderTarget createTestingOnlyBackendRenderTarget(int w, int h, GrColorType,
-                                                               GrSRGBEncoded) override;
+    GrBackendRenderTarget createTestingOnlyBackendRenderTarget(int w, int h, GrColorType) override;
     void deleteTestingOnlyBackendRenderTarget(const GrBackendRenderTarget&) override;
 
     void testingOnly_flushGpuAndSync() override {}
diff --git a/src/gpu/mtl/GrMtlGpu.h b/src/gpu/mtl/GrMtlGpu.h
index e49c6c2..e6e3c05 100644
--- a/src/gpu/mtl/GrMtlGpu.h
+++ b/src/gpu/mtl/GrMtlGpu.h
@@ -61,8 +61,7 @@
 
     void deleteTestingOnlyBackendTexture(const GrBackendTexture&) override;
 
-    GrBackendRenderTarget createTestingOnlyBackendRenderTarget(int w, int h, GrColorType,
-                                                               GrSRGBEncoded) override;
+    GrBackendRenderTarget createTestingOnlyBackendRenderTarget(int w, int h, GrColorType) override;
 
     void deleteTestingOnlyBackendRenderTarget(const GrBackendRenderTarget&) override;
 
diff --git a/src/gpu/mtl/GrMtlGpu.mm b/src/gpu/mtl/GrMtlGpu.mm
index d25ccc4..eb0f330 100644
--- a/src/gpu/mtl/GrMtlGpu.mm
+++ b/src/gpu/mtl/GrMtlGpu.mm
@@ -510,12 +510,11 @@
     }
 }
 
-GrBackendRenderTarget GrMtlGpu::createTestingOnlyBackendRenderTarget(int w, int h, GrColorType ct,
-                                                                     GrSRGBEncoded srgbEncoded) {
+GrBackendRenderTarget GrMtlGpu::createTestingOnlyBackendRenderTarget(int w, int h, GrColorType ct) {
     if (w > this->caps()->maxRenderTargetSize() || h > this->caps()->maxRenderTargetSize()) {
         return GrBackendRenderTarget();
     }
-    auto config = GrColorTypeToPixelConfig(ct, srgbEncoded);
+    auto config = GrColorTypeToPixelConfig(ct, GrSRGBEncoded::kNo);
     if (kUnknown_GrPixelConfig == config) {
         return {};
     }
diff --git a/src/gpu/vk/GrVkGpu.cpp b/src/gpu/vk/GrVkGpu.cpp
index fba7e05..d792978 100644
--- a/src/gpu/vk/GrVkGpu.cpp
+++ b/src/gpu/vk/GrVkGpu.cpp
@@ -1420,15 +1420,14 @@
     }
 }
 
-GrBackendRenderTarget GrVkGpu::createTestingOnlyBackendRenderTarget(int w, int h, GrColorType ct,
-                                                                    GrSRGBEncoded srgbEncoded) {
+GrBackendRenderTarget GrVkGpu::createTestingOnlyBackendRenderTarget(int w, int h, GrColorType ct) {
     if (w > this->caps()->maxRenderTargetSize() || h > this->caps()->maxRenderTargetSize()) {
         return GrBackendRenderTarget();
     }
 
     this->handleDirtyContext();
     GrVkImageInfo info;
-    auto config = GrColorTypeToPixelConfig(ct, srgbEncoded);
+    auto config = GrColorTypeToPixelConfig(ct, GrSRGBEncoded::kNo);
     if (kUnknown_GrPixelConfig == config) {
         return {};
     }
diff --git a/src/gpu/vk/GrVkGpu.h b/src/gpu/vk/GrVkGpu.h
index c0d068e..696394c 100644
--- a/src/gpu/vk/GrVkGpu.h
+++ b/src/gpu/vk/GrVkGpu.h
@@ -77,8 +77,7 @@
     bool isTestingOnlyBackendTexture(const GrBackendTexture&) const override;
     void deleteTestingOnlyBackendTexture(const GrBackendTexture&) override;
 
-    GrBackendRenderTarget createTestingOnlyBackendRenderTarget(int w, int h, GrColorType,
-                                                               GrSRGBEncoded) override;
+    GrBackendRenderTarget createTestingOnlyBackendRenderTarget(int w, int h, GrColorType) override;
     void deleteTestingOnlyBackendRenderTarget(const GrBackendRenderTarget&) override;
 
     void testingOnly_flushGpuAndSync() override;
diff --git a/tests/ProxyConversionTest.cpp b/tests/ProxyConversionTest.cpp
index 777e9fd..def9a70 100644
--- a/tests/ProxyConversionTest.cpp
+++ b/tests/ProxyConversionTest.cpp
@@ -28,8 +28,7 @@
     SkASSERT(1 == desc.fSampleCnt);
     GrSRGBEncoded srgbEncoded;
     auto ct = GrPixelConfigToColorTypeAndEncoding(desc.fConfig, &srgbEncoded);
-    auto backendRT = gpu->createTestingOnlyBackendRenderTarget(desc.fWidth, desc.fHeight, ct,
-                                                               GrSRGBEncoded::kNo);
+    auto backendRT = gpu->createTestingOnlyBackendRenderTarget(desc.fWidth, desc.fHeight, ct);
     return provider->wrapBackendRenderTarget(backendRT, origin);
 }
 
diff --git a/tests/ProxyTest.cpp b/tests/ProxyTest.cpp
index 69db12d..694adf4 100644
--- a/tests/ProxyTest.cpp
+++ b/tests/ProxyTest.cpp
@@ -209,8 +209,7 @@
             // sample counts :(.
             if (ctxInfo.grContext()->colorTypeSupportedAsSurface(colorType)) {
                 GrBackendRenderTarget backendRT = gpu->createTestingOnlyBackendRenderTarget(
-                        kWidthHeight, kWidthHeight, SkColorTypeToGrColorType(colorType),
-                        GrSRGBEncoded::kNo);
+                        kWidthHeight, kWidthHeight, SkColorTypeToGrColorType(colorType));
                 sk_sp<GrSurfaceProxy> sProxy(
                         proxyProvider->wrapBackendRenderTarget(backendRT, origin));
                 check_surface(reporter, sProxy.get(), origin, kWidthHeight, kWidthHeight,