Revert "mac: Deal with CGColorSpaceCopyICCProfile() 10.13 SDK bug"

This reverts commit b68e6af8.

The SDK bug that this worked around was fixed in Xcode 9b2 9M137d.

Bug: 729896
Change-Id: I818ae7b1c0544f7a75281bcdf68192ff14905eec
Reviewed-on: https://chromium-review.googlesource.com/545035Reviewed-by: Trent Apted <tapted@chromium.org>
Reviewed-by: ccameron chromium <ccameron@chromium.org>
Commit-Queue: ccameron chromium <ccameron@chromium.org>
Commit-Queue: Mark Mentovai <mark@chromium.org>
Cr-Commit-Position: refs/heads/master@{#485378}

ui/gfx/icc_profile_mac.mm

@@ -4,20 +4,9 @@
 
 #include "ui/gfx/icc_profile.h"
 
-#include <AvailabilityMacros.h>
-
 #include "base/mac/mac_util.h"
 #include "base/mac/scoped_cftyperef.h"
 
-#if defined(MAC_OS_X_VERSION_10_13) && \
-    MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_13
-// https://crbug.com/729896, https://openradar.appspot.com/32883726
-#undef CGColorSpaceCopyICCProfile
-extern "C" {
-CFDataRef CGColorSpaceCopyICCProfile(CGColorSpaceRef);
-}  // extern "C"
-#endif  // MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_13
-
 namespace gfx {
 
 // static

ui/gfx/mac/io_surface.cc

@@ -4,7 +4,6 @@
 
 #include "ui/gfx/mac/io_surface.h"
 
-#include <AvailabilityMacros.h>
 #include <stddef.h>
 #include <stdint.h>
 
@@ -18,15 +17,6 @@
 #include "ui/gfx/buffer_format_util.h"
 #include "ui/gfx/color_space_switches.h"
 
-#if defined(MAC_OS_X_VERSION_10_13) && \
-    MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_13
-// https://crbug.com/729896, https://openradar.appspot.com/32883726
-#undef CGColorSpaceCopyICCProfile
-extern "C" {
-CFDataRef CGColorSpaceCopyICCProfile(CGColorSpaceRef);
-}  // extern "C"
-#endif  // MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_13
-
 namespace gfx {
 
 namespace {