Bug 1725178 Comment 2 Edit History

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I took a profile with both Chrome and Firefox running at the same time. Using perfview I get a breakdown that looks like:
```
40.2%   firefox -contentproc  tab
18.5%   chrome --type=renderer   
17.1%   firefox -contentproc gpu 
 9.7%   chrome --type=gpu-process
 9.0%   firefox main             
 2.0%   chrome --type=utility    
 1.5%   firefox -contentproc  rdd
 1.3%   chrome main
```
Firefox is worse pretty obviously worse in all processes.
I took a profile with both Chrome and Firefox running at the same time. Using perfview I get a breakdown that looks like:
```
40.2%   firefox -contentproc  tab
18.5%   chrome --type=renderer   
17.1%   firefox -contentproc gpu 
 9.7%   chrome --type=gpu-process
 9.0%   firefox main             
 2.0%   chrome --type=utility    
 1.5%   firefox -contentproc  rdd
 1.3%   chrome main
```
Firefox is pretty obviously worse in all processes.

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