Disable RepaintGpuRasterizationKeyMobileSites

It crashes on the android perf bots.

BUG=412001

Review URL: https://codereview.chromium.org/551913003

Cr-Commit-Position: refs/heads/master@{#293891}

tools/perf/benchmarks/repaint.py

@@ -16,6 +16,7 @@ class RepaintKeyMobileSites(benchmark.Benchmark):
   page_set = page_sets.KeyMobileSitesPageSet
 
 
+@benchmark.Disabled('android')  # crbug.com/412001
 class RepaintGpuRasterizationKeyMobileSites(benchmark.Benchmark):
   """Measures repaint performance on the key mobile sites with forced GPU
   rasterization.