www/chromium: Update to 68.0.3440.84

Changelog: https://chromium.googlesource.com/chromium/src/+log/67.0.3396.87..68.0.3440.84?pretty=fuller&n=10000

At the moment pkg-message says that in order to work around the hanging tabs problem the user may wish to run the following commands:

# [ -d ~{user}/.cache/chromium ] || mkdir ~{user}/.cache/chromium
# echo "md $(echo ~{user})/.cache/chromium mfs rw,late,-w{user}:{group},-s300m 2 0" >> /etc/fstab
# mount ~{user}/.cache/chromium

Add fix-hanging-tabs.sh script to the DATADIR [1], which simplifies the process to just running

/usr/local/share/chromium/fix-hanging-tabs.sh $user $group

PR:		230264 [1]
Submitted by:	0mp [1]
MFH:		2018Q3
Security:	http://vuxml.freebsd.org/freebsd/b9c525d9-9198-11e8-beba-080027ef1a23.html

1 files changed, 89 insertions, 0 deletions

diff --git a/www/chromium/files/patch-build_config_compiler_BUILD.gn b/www/chromium/files/patch-build_config_compiler_BUILD.gn
new file mode 100644
index 000000000000..d37f7f2daa12
--- /dev/null
+++ b/www/chromium/files/patch-build_config_compiler_BUILD.gn
@@ -0,0 +1,89 @@
+--- build/config/compiler/BUILD.gn.orig	2018-08-01 00:08:26.000000000 +0200
++++ build/config/compiler/BUILD.gn	2018-08-05 04:12:50.165240000 +0200
+@@ -51,7 +51,7 @@
+   # only two architectures that are currently checked in). Turn this off when
+   # you are using a custom toolchain and need to control -B in cflags.
+   linux_use_bundled_binutils =
+-      linux_use_bundled_binutils_override && is_linux &&
++      linux_use_bundled_binutils_override && (is_linux && !is_bsd) &&
+       (current_cpu == "x64" || current_cpu == "x86")
+   binutils_path = rebase_path("//third_party/binutils/Linux_x64/Release/bin",
+                               root_build_dir)
+@@ -266,7 +266,7 @@
+     # Linker warnings.
+     if (fatal_linker_warnings && !(is_chromeos && current_cpu == "arm") &&
+         !(is_android && use_order_profiling) && !is_mac && !is_ios &&
+-        current_os != "aix") {
++        current_os != "aix" && !is_bsd) {
+       # TODO(jochen): Enable this on chromeos on arm. http://crbug.com/356580
+       # TODO(lizeb,pasko): Fix link errors when linking with order_profiling=1
+       # crbug.com/485542
+@@ -380,12 +380,6 @@
+       "-Wl,-z,now",
+       "-Wl,-z,relro",
+     ]
+-    if (!using_sanitizer) {
+-      ldflags += [
+-        "-Wl,-z,defs",
+-        "-Wl,--as-needed",
+-      ]
+-    }
+   }
+ 
+   # Linux-specific compiler flags setup.
+@@ -489,7 +483,7 @@
+   }
+ 
+   if (is_clang && !is_nacl && current_toolchain == host_toolchain &&
+-      target_os != "chromeos") {
++      target_os != "chromeos" && !is_bsd) {
+     cflags += [
+       # TODO(hans): Remove this once Clang generates better optimized debug info
+       # by default. https://crbug.com/765793
+@@ -734,7 +728,7 @@
+         cflags += [ "-mtune=$arm_tune" ]
+       }
+     } else if (current_cpu == "arm64") {
+-      if (is_clang && !is_android && !is_nacl && !is_fuchsia) {
++      if (is_clang && !is_android && !is_nacl && !is_fuchsia && !is_bsd) {
+         cflags += [ "--target=aarch64-linux-gnu" ]
+         ldflags += [ "--target=aarch64-linux-gnu" ]
+       }
+@@ -1415,10 +1409,6 @@
+ 
+         # TODO(hans): https://crbug.com/766891
+         "-Wno-null-pointer-arithmetic",
+-
+-        # Ignore warnings about MSVC optimization pragmas.
+-        # TODO(thakis): Only for no_chromium_code? http://crbug.com/505314
+-        "-Wno-ignored-pragma-optimize",
+       ]
+     } else if (use_xcode_clang) {
+       cflags += [
+@@ -1594,7 +1584,7 @@
+   # Mac and iOS use the mac-specific "libtool" command, not ar, which doesn't
+   # have a "thin archive" mode (it does accept -T, but it means truncating
+   # archive names to 16 characters, which is not what we want).
+-  if ((is_posix && !is_nacl && !is_mac && !is_ios) || is_fuchsia) {
++  if ((is_posix && !is_nacl && !is_mac && !is_ios && !is_bsd) || is_fuchsia) {
+     arflags = [ "-T" ]
+   }
+ }
+@@ -2119,7 +2109,7 @@
+         # [1] crrev.com/a81d5ade0b043208e06ad71a38bcf9c348a1a52f
+         cflags += [ "-gdwarf-3" ]
+       }
+-      cflags += [ "-g2" ]
++      cflags += [ "-g0" ]
+     }
+     if (use_debug_fission && !is_nacl && !is_android) {
+       # NOTE: Some Chrome OS builds globally set |use_debug_fission| to true,
+@@ -2139,7 +2129,7 @@
+     # DWARF info may be corrupt; offsets in a range list entry are in different
+     # sections" there.  Maybe just a bug in nacl_switch_32.S.
+     if (!is_mac && !is_ios && !is_nacl && target_cpu != "x86" &&
+-        (use_gold || use_lld)) {
++        (use_gold || use_lld) && !is_bsd) {
+       if (is_clang) {
+         # This flag enables the GNU-format pubnames and pubtypes sections,
+         # which lld needs in order to generate a correct GDB index.