color: Remove implied color space

cc/blink/web_display_item_list_impl.cc

Index: cc/blink/web_display_item_list_impl.cc
diff --git a/cc/blink/web_display_item_list_impl.cc b/cc/blink/web_display_item_list_impl.cc
index 52a5a058c7403848762fe37a352e89912c8c3005..8dc3e0647755b0520ebfc8bd61779deed32ebf08 100644
--- a/cc/blink/web_display_item_list_impl.cc
+++ b/cc/blink/web_display_item_list_impl.cc
@@ -151,11 +151,6 @@ void WebDisplayItemListImpl::setIsSuitableForGpuRasterization(bool isSuitable) {
   display_item_list_->SetIsSuitableForGpuRasterization(isSuitable);
 }
 
-void WebDisplayItemListImpl::setImpliedColorSpace(
-    const gfx::ColorSpace& implied_color_space) {
-  display_item_list_->SetImpliedColorSpace(implied_color_space);
-}
-
 WebDisplayItemListImpl::~WebDisplayItemListImpl() {
 }