Reorganized dependencies in generated samples_gen.gyp so that the conversion step always occurs before the copying step, which fixes a build problem on Windows. Worked around a gyp issue on Windows to properly convert both the plugin and WebGL versions of a couple of the assets.
Reorganized dependencies in generated samples_gen.gyp so that the
conversion step always occurs before the copying step, which fixes a
build problem on Windows. Worked around a gyp issue on Windows to
properly convert both the plugin and WebGL versions of a couple of the
assets.

BUG=none
TEST=built on Windows
TBR=gman

Review URL: http://codereview.chromium.org/1801008

git-svn-id: http://src.chromium.org/svn/trunk/src@46002 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 830d27dc9747d99c160527021b31638fdfab18f0
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