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 e63d061060bce633e59e5b69ea911900f68cc0be..54d519441f2b0baa8a2c86c8b3da822df325124f 100644
--- a/tools/metrics/histograms/enums.xml
+++ b/tools/metrics/histograms/enums.xml
@@ -26189,6 +26189,7 @@ 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">
@@ -31448,6 +31449,18 @@ 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"/>