Change //build/config/compiler:optimize_max to use -O3.

Certain components (e.g., v8) really want to be compiled with -O3,
but the current ":optimize_max" setting just used -O2. Since "max"
should theoretically mean "max", let's try making it be -O3 across
the board and see what happens.

[email protected]
BUG=616031

Review-Url: https://codereview.chromium.org/2048163002
Cr-Commit-Position: refs/heads/master@{#398704}
1 file changed