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- Implement i18n for strings.
- Localize CPU card title
- Localize Battery Status card title
- Localize Memory card title
- Localize Diagnostics app title

Bug:1125150
Test: browser_tests --gtest_filter=DiagnosticsApp*

Change-Id: Icf9dbb0b0a19c4d3d216548460c21a89fd178ecf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2433126Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Reviewed-by: Zentaro Kavanagh <zentaro@chromium.org>
Commit-Queue: Michael Checo <michaelcheco@google.com>
Cr-Commit-Position: refs/heads/master@{#812811}