Explicitly disable large profile startup tests Android.

BUG=481919
CQ_EXTRA_TRYBOTS=tryserver.chromium.perf:linux_perf_bisect;tryserver.chromium.perf:mac_perf_bisect;tryserver.chromium.perf:android_nexus5_perf_bisect

Review URL: https://codereview.chromium.org/1112553002

Cr-Commit-Position: refs/heads/master@{#327536}

tools/perf/benchmarks/startup.py

@@ -60,7 +60,7 @@ class StartupWarmBlankPage(_StartupWarm):
 
 @benchmark.Enabled('has tabs')
 @benchmark.Enabled('win', 'linux', 'mac')
-@benchmark.Disabled('reference')
+@benchmark.Disabled('reference', 'android')  # http://crbug.com/481919
 class StartupLargeProfileColdBlankPage(_StartupCold):
   """Measures cold startup time with a large profile."""
   tag = 'cold'
@@ -80,7 +80,7 @@ class StartupLargeProfileColdBlankPage(_StartupCold):
 
 @benchmark.Enabled('has tabs')
 @benchmark.Enabled('win', 'linux', 'mac')
-@benchmark.Disabled('reference')
+@benchmark.Disabled('reference', 'android')  # http://crbug.com/481919
 class StartupLargeProfileWarmBlankPage(_StartupWarm):
   """Measures warm startup time with a large profile."""
   tag = 'warm'