Add metrics for search engine promo and search widget

tools/metrics/histograms/enums.xml

Index: tools/metrics/histograms/enums.xml
diff --git a/tools/metrics/histograms/enums.xml b/tools/metrics/histograms/enums.xml
index 8410462ca637c6920829fc8f9b56ea2d2307bf4b..6d4b108d106494359c03d3e7359de9ccc830ae2f 100644
--- a/tools/metrics/histograms/enums.xml
+++ b/tools/metrics/histograms/enums.xml
@@ -26179,6 +26179,7 @@ from previous Chrome versions.
   <int value="45" label="Yahoo!"/>
   <int value="46" label="Yandex"/>
   <int value="47" label="Zoznam"/>
+  <int value="48" label="360"/>
 </enum>
 
 <enum name="OmniboxSuggestRequests" type="int">
@@ -31437,6 +31438,18 @@ from previous Chrome versions.
   <int value="33" label="NONE"/>
 </enum>
 
+<enum name="SearchEntryPoint type="int">
+  <int value="0" label="From search widget"/>
+  <int value="1" label="From omnibox"/>
+</enum>
+
+<enum name="SearchWidgetUseInfo" type="int">
+  <int value="0" label="Present in partnership device"/>
+  <int value="1" label="Not present in partnership device"/>
+  <int value="2" label="Present in non-partnership device"/>
+  <int value="3" label="Not present in non-partnership device"/>
+</enum>
+
 <enum name="SecurityInterstitialDecision" type="int">
   <int value="0" label="SHOW"/>
   <int value="1" label="PROCEED"/>