Enable sRGB on iOS, make sRGB decode support optional

tools/gpu/GrContextFactory.cpp

 
 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrContextFactory.h"
 #include "gl/GLTestContext.h"
@@ skipping 180 matching lines @@
 #endif
         default:
             return ContextInfo();
     }
     testCtx->makeCurrent();
     SkASSERT(testCtx && testCtx->backend() == backend);
     GrContextOptions grOptions = fGlobalOptions;
     if (ContextOptions::kUseInstanced & options) {
         grOptions.fEnableInstancedRendering = true;
     }
+    grOptions.fRequireDecodeDisableForSRGB =
+        SkToBool(ContextOptions::kRequireSRGBDecodeDisableSupport & options);
     grCtx.reset(GrContext::Create(backend, backendContext, grOptions));
     if (!grCtx.get()) {
         return ContextInfo();
     }
     if (ContextOptions::kEnableNVPR & options) {
         if (!grCtx->caps()->shaderCaps()->pathRenderingSupport()) {
             return ContextInfo();
         }
     }
     if (ContextOptions::kUseInstanced & options) {
@@ skipping 10 matching lines @@
     Context& context = fContexts.push_back();
     context.fBackend = backend;
     context.fTestContext = testCtx.release();
     context.fGrContext = SkRef(grCtx.get());
     context.fType = type;
     context.fOptions = options;
     context.fAbandoned = false;
     return ContextInfo(context.fBackend, context.fTestContext, context.fGrContext);
 }
 }  // namespace sk_gpu_test