mac color: Use sRGB for native controls instead of device RGB

third_party/WebKit/Source/platform/mac/GraphicsContextCanvas.mm

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "platform/mac/GraphicsContextCanvas.h"
 
 #import <AppKit/AppKit.h>
 #import <CoreGraphics/CoreGraphics.h>
 
+#include "platform/RuntimeEnabledFeatures.h"
 #include "platform/wtf/RetainPtr.h"
 #include "skia/ext/skia_utils_mac.h"
 
 namespace blink {
 
 GraphicsContextCanvas::GraphicsContextCanvas(PaintCanvas* canvas,
                                              const SkIRect& user_clip_rect,
                                              SkScalar bitmap_scale_factor)
     : canvas_(canvas),
       cg_context_(0),
@@ skipping 49 matching lines @@
     // non-NULL CGContext to use.
     bitmap_is_dummy_ = true;
     clip_bounds = SkIRect::MakeXYWH(0, 0, 1, 1);
   }
 
   // remember the top/left, in case we need to compose this later
   bitmap_offset_.set(clip_bounds.x(), clip_bounds.y());
 
   // Allocate an offscreen and draw into that, relying on the
   // compositing step to apply skia's clip.
-  WTF::RetainPtr<CGColorSpace> color_space(CGColorSpaceCreateDeviceRGB());
+  WTF::RetainPtr<CGColorSpace> color_space(
+      RuntimeEnabledFeatures::colorCorrectRenderingEnabled()
+          ? CGColorSpaceCreateWithName(kCGColorSpaceSRGB)
+          : CGColorSpaceCreateDeviceRGB());
 
   bool result = offscreen_.tryAllocN32Pixels(
       SkScalarCeilToInt(bitmap_scale_factor_ * clip_bounds.width()),
       SkScalarCeilToInt(bitmap_scale_factor_ * clip_bounds.height()));
   DCHECK(result);
   if (!result)
     return 0;
   offscreen_.eraseColor(0);
   int display_height = offscreen_.height();
   cg_context_ = CGBitmapContextCreate(
@@ skipping 11 matching lines @@
   CGContextConcatCTM(cg_context_, skia::SkMatrixToCGAffineTransform(matrix));
 
   return cg_context_;
 }
 
 bool GraphicsContextCanvas::HasEmptyClipRegion() const {
   return canvas_->isClipEmpty();
 }
 
 }  // namespace blink