Use upstream (Qt) fix for the ARM native build issue

- Backport upstream patch to fix native builds on ARM and aarch64
  (QTBUG-61128)

- Drop "Backport patch to fix FTBFS with GCC on aarch64 from upstream
  Chromium"

- Drop "Delete all "toolprefix = " lines from
  build/toolchain/linux/BUILD.gn"

qt5-qtwebengine.spec

@@ -105,9 +105,9 @@ Patch22: qtwebengine-opensource-src-5.9.0-system-re2.patch
 # Backport upstream patch to fix GN FTBFS on aarch64 (QTBUG-61128)
 # https://codereview.qt-project.org/196178
 Patch100: qtwebengine-opensource-src-5.9.0-gn-aarch64.patch
-# Backport patch to fix FTBFS with GCC on aarch64 from upstream Chromium
-# https://codereview.chromium.org/2545053002
-Patch101: qtwebengine-opensource-src-5.9.0-aarch64-gcc-toolchain.patch
+# Backport upstream patch to fix native builds on ARM and aarch64 (QTBUG-61128)
+# https://codereview.qt-project.org/197071
+Patch101: qtwebengine-opensource-src-5.9.0-host-toolchain.patch
 
 %if 0%{?fedora} && 0%{?fedora} < 25
 # work around missing qt5_qtwebengine_arches macro on F24
@@ -354,7 +354,7 @@ BuildArch: noarch
 %patch21 -p1 -b .gn-bootstrap-verbose
 %patch22 -p1 -b .system-re2
 %patch100 -p1 -b .gn-aarch64
-%patch101 -p1 -b .aarch64-gcc-toolchain
+%patch101 -p1 -b .host-toolchain
 # fix // in #include in content/renderer/gpu to avoid debugedit failure
 sed -i -e 's!gpu//!gpu/!g' \
   src/3rdparty/chromium/content/renderer/gpu/compositor_forwarding_message_filter.cc
@@ -362,10 +362,6 @@ sed -i -e 's!gpu//!gpu/!g' \
 sed -i -e 's!\./!!g' \
   src/3rdparty/chromium/third_party/angle/src/compiler/preprocessor/Tokenizer.cpp \
   src/3rdparty/chromium/third_party/angle/src/compiler/translator/glslang_lex.cpp
-# delete all "toolprefix = " lines from build/toolchain/linux/BUILD.gn, as we
-# never cross-compile in native Fedora RPMs, fixes ARM and aarch64 FTBFS
-sed -i -e '/toolprefix = /d' -e 's/\${toolprefix}//g' \
-  src/3rdparty/chromium/build/toolchain/linux/BUILD.gn
 
 # http://bugzilla.redhat.com/1337585
 # can't just delete, but we'll overwrite with system headers to be on the safe side
@@ -575,9 +571,8 @@ done
 - Drop the flag hacks (-g1 -fno-delete-null-pointer-checks), fixed upstream
 - Force verbose output from the GN bootstrap process
 - Backport upstream patch to fix GN FTBFS on aarch64 (QTBUG-61128)
-- Backport patch to fix FTBFS with GCC on aarch64 from upstream Chromium
+- Backport upstream patch to fix native builds on ARM and aarch64 (QTBUG-61128)
 - Fix src/3rdparty/chromium/build/linux/unbundle/re2.gn
-- Delete all "toolprefix = " lines from build/toolchain/linux/BUILD.gn
 
 * Sat May 13 2017 Rex Dieter <rdieter@fedoraproject.org> - 5.8.0-14
 - fix rpm macros

qtwebengine-opensource-src-5.9.0-aarch64-gcc-toolchain.patch

@@ -1,30 +0,0 @@
-Index: src/3rdparty/chromium/build/toolchain/linux/BUILD.gn
-diff --git a/src/3rdparty/chromium/build/toolchain/linux/BUILD.gn b/src/3rdparty/chromium/build/toolchain/linux/BUILD.gn
-index 548722d3938017ac936b9088b7a686c2afbbb5fe..86cd7dabc6e86d22a266817dfbb3bf0c719f7992 100644
---- a/src/3rdparty/chromium/build/toolchain/linux/BUILD.gn
-+++ b/src/3rdparty/chromium/build/toolchain/linux/BUILD.gn
-@@ -21,6 +21,24 @@ clang_toolchain("clang_arm64") {
-   }
- }
- 
-+gcc_toolchain("arm64") {
-+  toolprefix = "aarch64-linux-gnu-"
-+
-+  cc = "${toolprefix}gcc"
-+  cxx = "${toolprefix}g++"
-+
-+  ar = "${toolprefix}ar"
-+  ld = cxx
-+  readelf = "${toolprefix}readelf"
-+  nm = "${toolprefix}nm"
-+
-+  toolchain_args = {
-+    current_cpu = "arm64"
-+    current_os = "linux"
-+    is_clang = false
-+  }
-+}
-+
- gcc_toolchain("arm") {
-   toolprefix = "arm-linux-gnueabihf-"
- 

qtwebengine-opensource-src-5.9.0-host-toolchain.patch

@@ -0,0 +1,32 @@
+From 33b69c4d138a8eebc392737ee1a58d999f922d59 Mon Sep 17 00:00:00 2001
+From: Allan Sandfeld Jensen <allan.jensen@qt.io>
+Date: Mon, 12 Jun 2017 12:36:17 +0200
+Subject: [PATCH] Always set a host toolchain
+
+If we don't give Chromium a host toolchain it will pick one of its own
+overriding which compiler should be used, and breaking native builds
+on non-x86 architectuers.
+
+Task-number: QTBUG-61128
+Change-Id: Ia25a4f43a28214003abcb11dc75a0e57064f76a7
+---
+ src/core/config/linux.pri | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/core/config/linux.pri b/src/core/config/linux.pri
+index 24951cd..076d8a3 100644
+--- a/src/core/config/linux.pri
++++ b/src/core/config/linux.pri
+@@ -103,8 +103,8 @@ host_build {
+     gn_args += use_system_libffi=false
+ } else {
+     gn_args += custom_toolchain=\"$$QTWEBENGINE_OUT_ROOT/src/toolchain:target\"
++    gn_args += host_toolchain=\"$$QTWEBENGINE_OUT_ROOT/src/toolchain:host\"
+     cross_compile {
+-        gn_args += host_toolchain=\"$$QTWEBENGINE_OUT_ROOT/src/toolchain:host\"
+         gn_args += v8_snapshot_toolchain=\"$$QTWEBENGINE_OUT_ROOT/src/toolchain:v8_snapshot\"
+         GN_HOST_CPU = $$gnArch($$QMAKE_HOST.arch)
+         GN_TARGET_CPU = $$gnArch($$QT_ARCH)
+-- 
+2.7.4
+