Fix interface versions.

all_interfaces.h incorrectly uses a Fixed PPAPI version for the interface
but and a head rev version of the structure.  This was causing function
pointers between the C++ RealPepperInterface structure and the actual
PPAPI structures to misalign.

BUG=296668
R=binji@chromium.org

Review URL: https://codereview.chromium.org/23581018

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@224813 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 224813