Remove the base_gfx project since it no longer has an external dependencies.
Replace it with base_i18n which encapsulates all ICU dependencies.

BUG=none
TEST=none
Review URL: http://codereview.chromium.org/267048

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@29036 0039d316-1c4b-4281-b951-d872f2087c98

• app/app.gyp[diff]
• base/base.gyp[diff]
• chrome/chrome.gyp[diff]
• chrome/installer/installer.gyp[diff]
• chrome_frame/chrome_frame.gyp[diff]
• courgette/courgette.gyp[diff]
• ipc/ipc.gyp[diff]
• media/media.gyp[diff]
• net/net.gyp[diff]
• printing/printing.gyp[diff]
• tools/memory_watcher/memory_watcher.gyp[diff]
• webkit/tools/test_shell/test_shell.gyp[diff]