Adding support for controlling the global sRGB SkColor switch.

tools/skiaserve/Request.h

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef Request_DEFINED
 #define Request_DEFINED
 
@@ skipping 24 matching lines @@
     Request(SkString rootUrl);
     ~Request();
 
     // draws to skia draw op N, highlighting the Mth batch(-1 means no highlight)
     SkData* drawToPng(int n, int m = -1);
     SkData* writeOutSkp();
     SkCanvas* getCanvas();
     SkBitmap* getBitmapFromCanvas(SkCanvas* canvas);
     bool enableGPU(bool enable);
     bool setColorMode(int mode);
+    bool setSRGBMode(bool enable);
     bool hasPicture() const { return SkToBool(fPicture.get()); }
     int getLastOp() const { return fDebugCanvas->getSize() - 1; }
 
     bool initPictureFromStream(SkStream*);
 
     // Returns the json list of ops as an SkData
     SkData* getJsonOps(int n);
 
     // Returns a json list of batches as an SkData
     SkData* getJsonBatchList(int n);
@@ skipping 17 matching lines @@
     GrContext* getContext();
 
     sk_sp<SkPicture> fPicture;
     sk_gpu_test::GrContextFactory* fContextFactory;
     SkAutoTUnref<SkSurface> fSurface;
     bool fGPUEnabled;
     int fColorMode;
 };
 
 #endif