[touchscreen] Cannot move window by dragging title bar with default gtk decoration

With the default GTK decoration, it is not possible to drag the title bar of Chromium to move the window. When the setting is changed to "system" it works fine as any other window.

Expected:
By default chromium should be configured with system decorations.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: chromium-browser 34.0.1847.116-0ubuntu2
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Apr 22 17:58:18 2014
Desktop-Session:
 DESKTOP_SESSION = ubuntu
 XDG_CONFIG_DIRS = /etc/xdg/xdg-ubuntu:/usr/share/upstart/xdg:/etc/xdg
 XDG_DATA_DIRS = /usr/share/ubuntu:/usr/share/gnome:/usr/local/share/:/usr/share/
DetectedPlugins:

DiskUsage:
 b'Filesystem Type Size Used Avail Use% Mounted on\n/dev/sda2 ext4 455G 4,0G 427G 1% /\nnone tmpfs 4,0K 0 4,0K 0% /sys/fs/cgroup\nudev devtmpfs 1,9G 4,0K 1,9G 1% /dev\ntmpfs tmpfs 384M 1,1M 383M 1% /run\nnone tmpfs 5,0M 0 5,0M 0% /run/lock\nnone tmpfs 1,9G 8,0M 1,9G 1% /run/shm\nnone tmpfs 100M 44K 100M 1% /run/user\n/dev/sda1 vfat 511M 3,4M 508M 1% /boot/efi\n'

 Inodes:
 b'Filesystem Inodes IUsed IFree IUse% Mounted on\n/dev/sda2 29M 187K 29M 1% /\nnone 480K 2 480K 1% /sys/fs/cgroup\nudev 477K 502 477K 1% /dev\ntmpfs 480K 490 479K 1% /run\nnone 480K 3 480K 1% /run/lock\nnone 480K 12 480K 1% /run/shm\nnone 480K 27 480K 1% /run/user\n/dev/sda1 0 0 0 - /boot/efi\n'
Env:
 MOZ_PLUGIN_PATH = None
 LD_LIBRARY_PATH = None
InstallationDate: Installed on 2014-04-22 (0 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
SourcePackage: chromium-browser
UpgradeStatus: No upgrade log present (probably fresh install)
chromium-default: CHROMIUM_FLAGS=""
gconf-keys: /desktop/gnome/applications/browser/exec = b'/usr/bin/chromium-browser\n'/desktop/gnome/url-handlers/https/command = b'/usr/bin/chromium-browser %s\n'/desktop/gnome/url-handlers/https/enabled = b'true\n'/desktop/gnome/url-handlers/http/command = b'/usr/bin/chromium-browser %s\n'/desktop/gnome/url-handlers/http/enabled = b'true\n'/desktop/gnome/session/required_components/windowmanager = b''/apps/metacity/general/compositing_manager = b''/desktop/gnome/interface/icon_theme = b'gnome\n'/desktop/gnome/interface/gtk_theme = b'Clearlooks\n'
modified.conffile..etc.default.chromium.browser: [deleted]