Experiment with blocking resolution of HTTP URLs containing '\n' and '<'.

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 11f243c887a498ed580e0ea96e788ccf7158ebe2..efdf0cbeee68325f1e3af8b63e4698ed970e899e 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -89107,9 +89107,12 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <int value="1765" label="V8AssigmentExpressionLHSIsCallInStrict"/>
   <int value="1766" label="V8PromiseConstructorReturnedUndefined"/>
   <int value="1767" label="FormSubmittedWithUnclosedFormControl"/>
-  <int value="1768" label="DocumentCompleteURLContainingNewline"/>
-  <int value="1769" label="DocumentCompleteURLContainingOpenBrace"/>
-  <int value="1770" label="DocumentCompleteURLContainingNewlineAndOpenBrace"/>
+  <int value="1768" label="DocumentCompleteURLHTTPContainingNewline"/>
+  <int value="1769" label="DocumentCompleteURLHTTPContainingLessThan"/>
+  <int value="1770"
+      label="DocumentCompleteURLHTTPContainingNewlineAndLessThan"/>
+  <int value="1771"
+      label="DocumentCompleteURLNonHTTPContainingNewlineOrLessThan"/>
 </enum>
 
 <enum name="FetchRequestMode" type="int">