Add --enable-true-color-rendering flag

content/renderer/render_view_impl.cc

 // Copyright (c) 2012 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 "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <memory>
 
@@ skipping 920 matching lines @@
       static_cast<blink::PointerType>(prefs.primary_pointer_type));
   settings->setAvailableHoverTypes(prefs.available_hover_types);
   settings->setPrimaryHoverType(
       static_cast<blink::HoverType>(prefs.primary_hover_type));
   settings->setDeviceSupportsTouch(prefs.device_supports_touch);
   settings->setDeviceSupportsMouse(prefs.device_supports_mouse);
   settings->setEnableTouchAdjustment(prefs.touch_adjustment_enabled);
 
   WebRuntimeFeatures::enableColorCorrectRendering(
       prefs.color_correct_rendering_enabled);
+
+  WebRuntimeFeatures::enableTrueColorRendering(
+      prefs.true_color_rendering_enabled);
+
   settings->setShouldRespectImageOrientation(
       prefs.should_respect_image_orientation);
 
   settings->setEditingBehavior(
       static_cast<WebSettings::EditingBehavior>(prefs.editing_behavior));
 
   settings->setSupportsMultipleWindows(prefs.supports_multiple_windows);
 
   settings->setInertVisualViewport(prefs.inert_visual_viewport);
 
@@ skipping 1858 matching lines @@
                             INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
   }
 
   std::unique_ptr<InputEventAck> ack(
       new InputEventAck(InputEventAckSource::MAIN_THREAD, input_event->type,
                         INPUT_EVENT_ACK_STATE_NOT_CONSUMED));
   OnInputEventAck(std::move(ack));
 }
 
 }  // namespace content