FBTF: Move ctors/dtors into implementation files. Adds ctors/dtors to non-POD structs.

Cuts ~2MB off our .a files (Debug, Linux). Also added the "virtual" keyword on
a whole bunch of virtual dtors that were missing it.

BUG=none
TEST=compiles

Review URL: http://codereview.chromium.org/3522004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@61100 0039d316-1c4b-4281-b951-d872f2087c98
81 files changed