Componentize Chrome terms of service, Accept-Languages & default encoding.

In order to share those strings with Chrome on iOS, componentize the
strings IDS_TERMS_HTML, IDS_ACCEPT_LANGUAGES, IDS_DEFAULT_ENCODING.

Remove usafe of IDS_IOS_ACCEPT_LANGUAGES and IDS_IOS_DEFAULT_ENCODING
as they are duplicates of the newly componentized strings (but do not
remove them yet as they are still used downstream).

Fix the script packing the resources to pack those new generated .pak
files for both iOS and other platforms.

BUG=568486

Review URL: https://codereview.chromium.org/1679283002

Cr-Commit-Position: refs/heads/master@{#374951}
177 files changed