Remove dangerous CHECK. Add unit test.

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 efc8e441b77c0e5745720509692128820e6ce9e4..e818c45d8c167ad0f8c0087df038f3216603cfa1 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -72577,8 +72577,8 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <int value="107" label="RDHI_WRONG_STORAGE_PARTITION"/>
   <int value="108" label="RDH_INVALID_REQUEST_ID"/>
   <int value="109" label="BDH_SERVICE_NOT_ALLOWED_FOR_ORIGIN"/>
-  <int value="110" label="WSH_SEND_BLOB_DURING_BLOB_SEND"/>
-  <int value="111" label="WSH_SEND_FRAME_DURING_BLOB_SEND"/>
+  <int value="110" label="WSI_UNEXPECTED_ADD_CHANNEL_REQUEST"/>
+  <int value="111" label="WSI_UNEXPECTED_SEND_FRAME"/>
   <int value="112" label="RFH_UNEXPECTED_LOAD_START"/>
   <int value="113" label="NMF_INVALID_ARGUMENT"/>
   <int value="114" label="RFH_INVALID_ORIGIN_ON_COMMIT"/>
@@ -72594,7 +72594,7 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <int value="124" label="DBMF_INVALID_ORIGIN_ON_GET_SPACE"/>
   <int value="125" label="DBMF_INVALID_ORIGIN_ON_MODIFIED"/>
   <int value="126" label="DBMF_INVALID_ORIGIN_ON_CLOSED"/>
-  <int value="127" label="WSH_INVALID_HEADER_VALUE"/>
+  <int value="127" label="WSI_INVALID_HEADER_VALUE"/>
   <int value="128" label="SWDH_SET_HOSTED_VERSION_INVALID_HOST"/>
   <int value="129" label="SWDH_SET_HOSTED_VERSION_PROCESS_MISMATCH"/>
   <int value="130" label="MSDH_INVALID_FRAME_ID"/>
@@ -72606,6 +72606,8 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <int value="136" label="DSH_NOT_ALLOCATED_SESSION_ID"/>
   <int value="137" label="DSH_DELETED_SESSION_ID"/>
   <int value="138" label="DSH_WRONG_STORAGE_PARTITION"/>
+  <int value="139" label="BDH_DISALLOWED_ORIGIN"/>
+  <int value="140" label="ARH_CREATED_STREAM_WITHOUT_AUTHORIZATION"/>
 </enum>
 
 <enum name="BadMessageReasonExtensions" type="int">