tree e01e70bc07ad34b9cfbb02bc1c1c7ea477335ef4
parent 116ef5a1e921a4f55235b72e63edd66c41905d56
author Luna Lu <loonybear@chromium.org> 1554307382 -0700
committer Chromium WPT Sync <blink-w3c-test-autoroller@chromium.org> 1554307382 -0700

Support enum-type parameterized feature policy

Note: this CL does not include the parser implementation

This allows us to specify value as following:

feature_name *(enum1) 'self'(enum2);

To specify a enum, you need to provide max value and min value,
otherwise 0 and numeric_limit<unsigned>::max() is used.

To check if a feature is enabled, instead of using the threshold
value, call feature_policy->GetFeatureValueForOrigin(feature, origin)
and interpret the enum to get the feature state.

Bug: 924568
Change-Id: I2e5ca7e82cfbd3b9258dd84fc6735e9b548099f4