Add domain request detection to incident reporting service.

tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index 00a3179a3289856edfc657a3040588f1c79a7a1f..5f1d1ab24772d83464006f099d5bfec8b8f24ce7 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -51988,7 +51988,7 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <int value="3" label="BlacklistLoad"/>
   <int value="4" label="OmniboxInteraction"/>
   <int value="5" label="VariationsSeedSignature"/>
-  <int value="6" label="ScriptRequest"/>
+  <int value="6" label="ResourceRequest"/>

[Alexei Svitkine (slow), 2015/04/01 21:02:59]

Don't re-use the same enum value for a different purpose - else if you aggregate
data between versions on the dashboards, the results will be nonsensical.

[grt (UTC plus 2), 2015/04/01 22:04:02]

This is a rename rather than a reuse. Does that pose any problems?

[Alexei Svitkine (slow), 2015/04/02 15:30:31]

Ah ok - in that case it's ok - assuming the meaning is the same between
different versions.

 </enum>
 
 <enum name="Inconsistencies" type="int">