www-client/chromium: fix build with cups disabled

Closes: https://bugs.gentoo.org/640642
Package-Manager: Portage-2.3.19_p1, Repoman-2.3.6_p35

www-client/chromium/chromium-64.0.3282.24.ebuild

@@ -146,6 +146,7 @@ PATCHES=(
 	"${FILESDIR}/chromium-FORTIFY_SOURCE-r2.patch"
 	"${FILESDIR}/chromium-webrtc-r0.patch"
 	"${FILESDIR}/chromium-memcpy-r0.patch"
+	"${FILESDIR}/chromium-cups-r0.patch"
 )
 
 pre_build_checks() {

www-client/chromium/files/chromium-cups-r0.patch

@@ -0,0 +1,45 @@
+From 3cf91d8d674a496d533aa106723a632b68ab26ba Mon Sep 17 00:00:00 2001
+From: Tom Anderson <[email protected]>
+Date: Tue, 12 Dec 2017 23:31:56 +0000
+Subject: [PATCH] Fix use_cups=false build
+
+BUG=793801
+[email protected]
+
+Change-Id: I60ee6ec48d2686d0b42ca25311a9b76009ce9768
+Reviewed-on: https://chromium-review.googlesource.com/823245
+Reviewed-by: Lei Zhang <[email protected]>
+Commit-Queue: Thomas Anderson <[email protected]>
+Cr-Commit-Position: refs/heads/master@{#523602}
+---
+ chrome/service/cloud_print/print_system.cc | 9 ++++++++-
+ 1 file changed, 8 insertions(+), 1 deletion(-)
+
+diff --git a/chrome/service/cloud_print/print_system.cc b/chrome/service/cloud_print/print_system.cc
+index ac94c804f9..4ceba96919 100644
+--- a/chrome/service/cloud_print/print_system.cc
++++ b/chrome/service/cloud_print/print_system.cc
+@@ -5,6 +5,7 @@
+ #include "chrome/service/cloud_print/print_system.h"
+
+ #include "base/guid.h"
++#include "build/build_config.h"
+
+ namespace cloud_print {
+
+@@ -35,5 +36,11 @@ std::string PrintSystem::GenerateProxyId() {
+   return base::GenerateGUID();
+ }
+
+-}  // namespace cloud_print
++#if defined(OS_LINUX) && !defined(USE_CUPS)
++scoped_refptr<PrintSystem> PrintSystem::CreateInstance(
++    const base::DictionaryValue*) {
++  return nullptr;
++}
++#endif
+
++}  // namespace cloud_print
+-- 
+2.15.1
+