Implement a JavaScript API for document scanning

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 93209b724dee46694d5a3e675ac879e13d7a9ecf..a2692ceb751a5a66e73e56f58ca7dfceaf0cb994 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -42713,6 +42713,7 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <int value="904" label="COPRESENCESOCKET_DISCONNECT"/>
   <int value="905" label="BOOKMARKMANAGERPRIVATE_SETVERSION"/>
   <int value="906" label="FILESYSTEMPROVIDER_NOTIFY"/>
+  <int value="907" label="DOCUMENT_SCAN_SCAN"/>
 </enum>
 
 <enum name="ExtensionInstallCause" type="int">
@@ -42894,6 +42895,12 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <int value="60" label="kAccessibilityFeaturesModify"/>
   <int value="61" label="kAccessibilityFeaturesRead"/>
   <int value="62" label="kBluetoothPrivate"/>
+  <int value="63" label="kIdentityEmail"/>
+  <int value="64" label="kExperienceSamplingPrivate"/>
+  <int value="65" label="kCopresence"/>
+  <int value="66" label="kTopSites"/>
+  <int value="67" label="kU2fDevices"/>
+  <int value="68" label="kDocumentScan"/>
 </enum>
 
 <enum name="ExtensionServiceVerifyAllSuccess" type="int">