Karl Seamon

…ates with arrow keys relates to internal ticket 239561710

Observed a tiny but measurable improvement to the performance of creating and destroying matTooltips.

1) Uplevels repeated logic to the host CdkTable which does it once instead of n times. 2) Skips setting role=cell in native tables, for which it is already the default...

bug(matTooltip): Add option to set aria-labelledby rather than aria-describedby

7

#### Reproduction matTooltip is only able to apply aria-describedby to its host element. This is not optimal for host elements that have no aria-label or text contents. #### Expected Behavior...

…duce layout thrashing (where possible) There's still one set of measurements at startup. It might be possible to eliminate that along with some of the existing code with some additional...