Make masonfreed an owner of the DOM and shadow DOM benchmarks

Benchmark owner list: go/chrome-benchmarks
How to update benchmark owners:
  https://chromium.googlesource.com/chromium/src/+/master/docs/speed/benchmark/benchmark_ownership.md

Change-Id: Ie32ea8e90adc8e4db881ee697829d62ce545ecda
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1879312
Auto-Submit: Philip Rogers <pdr@chromium.org>
Reviewed-by: Mason Freed <masonfreed@chromium.org>
Reviewed-by: Annie Sullivan <sullivan@chromium.org>
Commit-Queue: Annie Sullivan <sullivan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#709245}

tools/perf/benchmark.csv

@@ -8,14 +8,14 @@ blink_perf.bindings,"jbroman@chromium.org, yukishiino@chromium.org, haraken@chro
 blink_perf.canvas,"aaronhk@chromium.org, fserb@chromium.org",Blink>Canvas,https://bit.ly/blink-perf-benchmarks,
 blink_perf.css,"futhark@chromium.org, andruud@chromium.org",Blink>CSS,https://bit.ly/blink-perf-benchmarks,
 blink_perf.display_locking,vmpstr@chromium.org,Blink>Paint,https://bit.ly/blink-perf-benchmarks,
-blink_perf.dom,hayato@chromium.org,Blink>DOM,https://bit.ly/blink-perf-benchmarks,
-blink_perf.events,hayato@chromium.org,Blink>DOM,https://bit.ly/blink-perf-benchmarks,
+blink_perf.dom,masonfreed@chromium.org,Blink>DOM,https://bit.ly/blink-perf-benchmarks,
+blink_perf.events,masonfreed@chromium.org,Blink>DOM,https://bit.ly/blink-perf-benchmarks,
 blink_perf.image_decoder,cblume@chromium.org,Internals>Images>Codecs,https://bit.ly/blink-perf-benchmarks,
 blink_perf.layout,eae@chromium.org,Blink>Layout,https://bit.ly/blink-perf-benchmarks,
 blink_perf.owp_storage,dmurph@chromium.org,Blink>Storage,https://bit.ly/blink-perf-benchmarks,
 blink_perf.paint,wangxianzhu@chromium.org,Blink>Paint,https://bit.ly/blink-perf-benchmarks,
 blink_perf.parser,"jbroman@chromium.org, yukishiino@chromium.org, haraken@chromium.org",Blink>Bindings,https://bit.ly/blink-perf-benchmarks,
-blink_perf.shadow_dom,hayato@chromium.org,Blink>DOM>ShadowDOM,https://bit.ly/blink-perf-benchmarks,
+blink_perf.shadow_dom,masonfreed@chromium.org,Blink>DOM>ShadowDOM,https://bit.ly/blink-perf-benchmarks,
 blink_perf.svg,"kouhei@chromium.org, fs@opera.com",Blink>SVG,https://bit.ly/blink-perf-benchmarks,
 components_perftests,csharrison@chromium.org,,,
 dawn_perf_tests,"enga@chromium.org, chrome-gpu-perf-owners@chromium.org",Internals>GPU>Dawn,https://dawn.googlesource.com/dawn/+/HEAD/src/tests/perf_tests/README.md,

tools/perf/benchmarks/blink_perf.py

@@ -428,7 +428,7 @@ class BlinkPerfCanvas(_BlinkPerfBenchmark):
       page.skipped_gpus = []
     return story_set
 
-@benchmark.Info(emails=['hayato@chromium.org'],
+@benchmark.Info(emails=['masonfreed@chromium.org'],
                 component='Blink>DOM',
                 documentation_url='https://bit.ly/blink-perf-benchmarks')
 class BlinkPerfDOM(_BlinkPerfBenchmark):
@@ -439,7 +439,7 @@ class BlinkPerfDOM(_BlinkPerfBenchmark):
     return 'blink_perf.dom'
 
 
-@benchmark.Info(emails=['hayato@chromium.org'],
+@benchmark.Info(emails=['masonfreed@chromium.org'],
                 component='Blink>DOM',
                 documentation_url='https://bit.ly/blink-perf-benchmarks')
 class BlinkPerfEvents(_BlinkPerfBenchmark):
@@ -537,7 +537,7 @@ class BlinkPerfSVG(_BlinkPerfBenchmark):
     return 'blink_perf.svg'
 
 
-@benchmark.Info(emails=['hayato@chromium.org'],
+@benchmark.Info(emails=['masonfreed@chromium.org'],
                 component='Blink>DOM>ShadowDOM',
                 documentation_url='https://bit.ly/blink-perf-benchmarks')
 class BlinkPerfShadowDOM(_BlinkPerfBenchmark):