Removed HostControl implementation of IPersistStreamInitImpl.
Removed HostControl implementation of IPersistStreamInitImpl.

See http://msdn.microsoft.com/en-us/visualc/ee309358.aspx. According to the description of the vulnerability, O3D is not vulnerable. But HostControl does not need to implement this interface anyway so I'm removing it.
Review URL: http://codereview.chromium.org/160342

git-svn-id: http://src.chromium.org/svn/trunk/src@21994 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 7a60a58bbf559539cf31a4b9ef67733afbcd11bc
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser