Sync patches r14541 and r14542 from main trunk.
Update platforms to use new display engine and browser.

git-svn-id: svn://svn.code.sf.net/p/edk2/code/branches/UDK2010.SR1/OvmfPkg@14639 6f19259b-4bc3-4df7-8a09-765794883524
Sync missing part of r14541 from main trunk.
Update OVMF platform to use new display engine and browser.

git-svn-id: svn://svn.code.sf.net/p/edk2/code/branches/UDK2010.SR1/OvmfPkg@14640 6f19259b-4bc3-4df7-8a09-765794883524