Enable gpusrgb config on bots.

src/gpu/GrContextFactory.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrContextFactory_DEFINED
 #define GrContextFactory_DEFINED
 
@@ skipping 35 matching lines @@
 
     static const int kGLContextTypeCnt = kLastGLContextType + 1;
 
     /**
      * Options for GL context creation. For historical and testing reasons the options will default
      * to not using GL_NV_path_rendering extension  even when the driver supports it.
      */
     enum GLContextOptions {
         kNone_GLContextOptions = 0,
         kEnableNVPR_GLContextOptions = 0x1,
+        kRequireSRGBSupport_GLContextOptions = 0x2,
     };
 
     static bool IsRenderingGLContext(GLContextType type) {
         switch (type) {
             case kNull_GLContextType:
             case kDebug_GLContextType:
                 return false;
             default:
                 return true;
         }
@@ skipping 69 matching lines @@
         GLContextType fType;
         GLContextOptions fOptions;
         SkGLContext*  fGLContext;
         GrContext*    fGrContext;
     };
     SkTArray<Context, true> fContexts;
     const GrContextOptions  fGlobalOptions;
 };
 
 #endif