Having getter functions in the State class non-inline results in more generated code to call the function than it'd take to just fetch the value from the class. For those cases inline the getter functions to reduce calling overhead and binary size.

Bug: angleproject:2973

Change-Id: Iddd14fd836ee89de69cdabfd58b95bcedc7e9e4e
Reviewed-on: https://chromium-review.googlesource.com/c/1340220
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>