Improve .png formatting for pngs in browser/resources and browser/resources/options

Reduce size of all PNGs with pngcrush.

BUG=73100
TEST=trybots

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=75434

[Evan Stade, 2011-02-17 20:35:41]

well, this patch doesn't look like it will have much success on the trybots

[Elliot Glaysher, 2011-02-17 20:45:07]

On 2011/02/17 20:35:41, Evan Stade wrote:
> well, this patch doesn't look like it will have much success on the trybots

Rubber. Stamp.

[Evan Stade, 2011-02-17 22:56:53]

I'm just going to abandon this change as it only saves us 273kb. I will instead
turn pngcrush into a build step.

[Evan Stade, 2011-02-18 19:56:55]

per my reasoning on crbug.com/73247, I want to commit this after all rather than
cooking pngcrush into our build system.

[akh.yuu040928, 2012-10-13 20:17:22]

lgtm

[akh.yuu040928, 2012-10-13 20:26:52]

lgtm

[akh.yuu040928, 2012-11-04 15:26:21]

On 2011/02/18 19:56:55, Evan Stade wrote:
> per my reasoning on crbug.com/73247, I want to commit this after all rather
than
> cooking pngcrush into our build system.

[hsiu1213, 2013-04-21 17:28:44]

On 2011/02/17 20:35:41, Evan Stade wrote:
> well, this patch doesn't look like it will have much success on the trybots