Content is swizzled when texture format has different component order
than expected format by platform. RGBA_4444 implies to use 4444 bits and
does not affect component order. So, no need to swizzle contents.

BUG=399634

Review URL: https://codereview.chromium.org/460563003

Cr-Commit-Position: refs/heads/master@{#289266}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@289266 0039d316-1c4b-4281-b951-d872f2087c98