www-client/chromium: Backport XDG_CURRENT_DESKTOP parsing fix

Closes: https://bugs.gentoo.org/683792
Package-Manager: Portage-2.3.62, Repoman-2.3.12
Signed-off-by: Pacho Ramos <pacho@gentoo.org>

2 files changed, 125 insertions, 0 deletions

diff --git a/www-client/chromium/chromium-73.0.3683.86.ebuild b/www-client/chromium/chromium-73.0.3683.86.ebuild
index e02966e7154b..9131002b4479 100644
--- a/www-client/chromium/chromium-73.0.3683.86.ebuild
+++ b/www-client/chromium/chromium-73.0.3683.86.ebuild
@@ -149,6 +149,7 @@ PATCHES=(
 	"${FILESDIR}/chromium-73-gcc-4.patch"
 	"${FILESDIR}/chromium-73-gcc-5.patch"
 	"${FILESDIR}/chromium-73-gcc-6.patch"
+	"${FILESDIR}/chromium-73-xdg-current-desktop.patch"
 )
 
 pre_build_checks() {
diff --git a/www-client/chromium/files/chromium-73-xdg-current-desktop.patch b/www-client/chromium/files/chromium-73-xdg-current-desktop.patch
new file mode 100644
index 000000000000..09e3b1d2aec2
--- /dev/null
+++ b/www-client/chromium/files/chromium-73-xdg-current-desktop.patch
@@ -0,0 +1,124 @@
+Correct the parsing of the XDG_CURRENT_DESKTOP
+
+The XDG_CURRENT_DESKTOP could contain multiple values in priority order
+separated by colon. Go through them in the loop and return on the first
+one that we recognize/support.
+
+The previous state was causing problems with Chrome on the GNOME Classic
+mode (used in Red Hat Enterprise Linux 7) where the users with multiple
+Google accounts set in Chrome couldn't switch between them - only one was
+shown in the account switcher in i.e. GMail. The reason for that was that
+the XDG_CURRENT_DESKTOP's value GNOME:GNOME-Classic was parsed as
+not as base::nix::DesktopEnvironment::DESKTOP_ENVIRONMENT_GNOME.
+
+base: :nix::DesktopEnvironment::DESKTOP_ENVIRONMENT_OTHER and
+Change-Id: I122f24fd1cf5a0f932c3fccd5220152a9944609d
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1541077
+Reviewed-by: Lei Zhang <thestig@chromium.org>
+Reviewed-by: Thomas Anderson <thomasanderson@chromium.org>
+Commit-Queue: Tomáš Popela <tomas.popela@gmail.com>
+Cr-Commit-Position: refs/heads/master@{#645224}
+diff --git a/base/nix/xdg_util.cc b/base/nix/xdg_util.cc
+index 9ff4d88..f051080 100644
+--- a/base/nix/xdg_util.cc
++++ b/base/nix/xdg_util.cc
+@@ -11,6 +11,7 @@
+ #include "base/files/file_path.h"
+ #include "base/files/file_util.h"
+ #include "base/path_service.h"
++#include "base/strings/string_split.h"
+ #include "base/strings/string_util.h"
+ #include "base/third_party/xdg_user_dirs/xdg_user_dir_lookup.h"
+ 
+@@ -57,35 +58,37 @@
+   // XDG_CURRENT_DESKTOP is the newest standard circa 2012.
+   std::string xdg_current_desktop;
+   if (env->GetVar("XDG_CURRENT_DESKTOP", &xdg_current_desktop)) {
+-    // Not all desktop environments set this env var as of this writing.
+-    if (base::StartsWith(xdg_current_desktop, "Unity",
+-                         base::CompareCase::SENSITIVE)) {
+-      // gnome-fallback sessions set XDG_CURRENT_DESKTOP to Unity
+-      // DESKTOP_SESSION can be gnome-fallback or gnome-fallback-compiz
+-      std::string desktop_session;
+-      if (env->GetVar("DESKTOP_SESSION", &desktop_session) &&
+-          desktop_session.find("gnome-fallback") != std::string::npos) {
+-        return DESKTOP_ENVIRONMENT_GNOME;
+-      }
+-      return DESKTOP_ENVIRONMENT_UNITY;
+-    }
+-    if (xdg_current_desktop == "GNOME")
+-      return DESKTOP_ENVIRONMENT_GNOME;
+-    if (xdg_current_desktop == "X-Cinnamon")
+-      return DESKTOP_ENVIRONMENT_CINNAMON;
+-    if (xdg_current_desktop == "KDE") {
+-      std::string kde_session;
+-      if (env->GetVar(kKDESessionEnvVar, &kde_session)) {
+-        if (kde_session == "5") {
+-          return DESKTOP_ENVIRONMENT_KDE5;
++    // It could have multiple values separated by colon in priority order.
++    for (const auto& value : SplitStringPiece(
++             xdg_current_desktop, ":", TRIM_WHITESPACE, SPLIT_WANT_NONEMPTY)) {
++      if (value == "Unity") {
++        // gnome-fallback sessions set XDG_CURRENT_DESKTOP to Unity
++        // DESKTOP_SESSION can be gnome-fallback or gnome-fallback-compiz
++        std::string desktop_session;
++        if (env->GetVar("DESKTOP_SESSION", &desktop_session) &&
++            desktop_session.find("gnome-fallback") != std::string::npos) {
++          return DESKTOP_ENVIRONMENT_GNOME;
+         }
++        return DESKTOP_ENVIRONMENT_UNITY;
+       }
+-      return DESKTOP_ENVIRONMENT_KDE4;
++      if (value == "GNOME")
++        return DESKTOP_ENVIRONMENT_GNOME;
++      if (value == "X-Cinnamon")
++        return DESKTOP_ENVIRONMENT_CINNAMON;
++      if (value == "KDE") {
++        std::string kde_session;
++        if (env->GetVar(kKDESessionEnvVar, &kde_session)) {
++          if (kde_session == "5") {
++            return DESKTOP_ENVIRONMENT_KDE5;
++          }
++        }
++        return DESKTOP_ENVIRONMENT_KDE4;
++      }
++      if (value == "Pantheon")
++        return DESKTOP_ENVIRONMENT_PANTHEON;
++      if (value == "XFCE")
++        return DESKTOP_ENVIRONMENT_XFCE;
+     }
+-    if (xdg_current_desktop == "Pantheon")
+-      return DESKTOP_ENVIRONMENT_PANTHEON;
+-    if (xdg_current_desktop == "XFCE")
+-      return DESKTOP_ENVIRONMENT_XFCE;
+   }
+ 
+   // DESKTOP_SESSION was what everyone used in 2010.
+diff --git a/base/nix/xdg_util_unittest.cc b/base/nix/xdg_util_unittest.cc
+index e195303..ad81836 100644
+--- a/base/nix/xdg_util_unittest.cc
++++ b/base/nix/xdg_util_unittest.cc
+@@ -34,6 +34,7 @@
+ const char* const kDesktopXFCE = "xfce";
+ const char* const kXdgDesktopCinnamon = "X-Cinnamon";
+ const char* const kXdgDesktopGNOME = "GNOME";
++const char* const kXdgDesktopGNOMEClassic = "GNOME:GNOME-Classic";
+ const char* const kXdgDesktopKDE = "KDE";
+ const char* const kXdgDesktopPantheon = "Pantheon";
+ const char* const kXdgDesktopUnity = "Unity";
+@@ -110,6 +111,15 @@
+   EXPECT_EQ(DESKTOP_ENVIRONMENT_GNOME, GetDesktopEnvironment(&getter));
+ }
+ 
++TEST(XDGUtilTest, GetXdgDesktopGnomeClassic) {
++  MockEnvironment getter;
++  EXPECT_CALL(getter, GetVar(_, _)).WillRepeatedly(Return(false));
++  EXPECT_CALL(getter, GetVar(Eq(kXdgDesktop), _))
++      .WillOnce(DoAll(SetArgPointee<1>(kXdgDesktopGNOMEClassic), Return(true)));
++
++  EXPECT_EQ(DESKTOP_ENVIRONMENT_GNOME, GetDesktopEnvironment(&getter));
++}
++
+ TEST(XDGUtilTest, GetXdgDesktopGnomeFallback) {
+   MockEnvironment getter;
+   EXPECT_CALL(getter, GetVar(_, _)).WillRepeatedly(Return(false));