Bug 1504906 - Install the Gtk+ 3.10 packages and required dependencies in the build docker images. r=gps

Interestingly, the resulting binaries are still compatible with Gtk+
3.4. The only difference in symbol use are:
  g_log -> g_logv
  g_assertion_message -> g_assertion_message_expr

Both of those symbols are actually available in older versions of glib.
Some #defines just switched from using the latter rather than the
former.

Differential Revision: https://phabricator.services.mozilla.com/D11141

taskcluster/ci/docker-image/kind.yml

@@ -57,7 +57,16 @@ jobs:
     parent: debian7-base
     definition: debian7-build
     packages:
+      - deb7-atk
+      - deb7-glib
+      - deb7-gdk-pixbuf
+      - deb7-gtk3
+      - deb7-harfbuzz
+      - deb7-libxkbcommon
+      - deb7-pango
+      - deb7-pcre3
       - deb7-valgrind
+      - deb7-wayland
     args:
       ARCH: amd64
   debian7-i386-build:
@@ -65,6 +74,22 @@ jobs:
     parent: debian7-base
     definition: debian7-build
     packages:
+      - deb7-32-atk
+      - deb7-32-glib
+      - deb7-32-gdk-pixbuf
+      - deb7-32-gtk3
+      - deb7-32-harfbuzz
+      - deb7-32-libxkbcommon
+      - deb7-32-pango
+      - deb7-32-pcre3
+      - deb7-32-xkeyboard-config
+      - deb7-32-wayland
+      - deb7-atk
+      - deb7-glib
+      - deb7-gtk3
+      - deb7-harfbuzz
+      - deb7-python-defaults
+      - deb7-pcre3
       - deb7-valgrind
     args:
       ARCH: i386