Remove a handful of obsolete suggestions metrics

Delete unused SuggsetionsMetrics methods and mark corresponding
user actions as obsolete.

BUG=

Change-Id: I2c9d43d517ed03162dbe5fa051639a0cc342846a
Reviewed-on: https://chromium-review.googlesource.com/1162316Reviewed-by: Steven Holte <holte@chromium.org>
Commit-Queue: Theresa <twellington@chromium.org>
Cr-Commit-Position: refs/heads/master@{#580642}

chrome/android/java/src/org/chromium/chrome/browser/suggestions/SuggestionsMetrics.java

@@ -40,14 +40,6 @@ public abstract class SuggestionsMetrics {
         RecordUserAction.record("Suggestions.SurfaceVisible");
     }
 
-    public static void recordSurfaceHalfVisible() {
-        RecordUserAction.record("Suggestions.SurfaceHalfVisible");
-    }
-
-    public static void recordSurfaceFullyVisible() {
-        RecordUserAction.record("Suggestions.SurfaceFullyVisible");
-    }
-
     public static void recordSurfaceHidden() {
         RecordUserAction.record("Suggestions.SurfaceHidden");
     }
@@ -76,18 +68,6 @@ public abstract class SuggestionsMetrics {
         RecordUserAction.record("Suggestions.Card.SwipedAway");
     }
 
-    public static void recordContextualSuggestionOpened() {
-        RecordUserAction.record("Suggestions.ContextualSuggestion.Open");
-    }
-
-    public static void recordContextualSuggestionsCarouselShown() {
-        RecordUserAction.record("Suggestions.Contextual.Carousel.Shown");
-    }
-
-    public static void recordContextualSuggestionsCarouselScrolled() {
-        RecordUserAction.record("Suggestions.Contextual.Carousel.Scrolled");
-    }
-
     // Effect/Purpose of the interactions. Most are recorded in |content_suggestions_metrics.h|
 
     public static void recordActionViewAll() {

tools/metrics/actions/actions.xml

@@ -18299,6 +18299,9 @@ should be able to be added at any place in this file.
 </action>
 
 <action name="Suggestions.Contextual.Carousel.Scrolled">
+  <obsolete>
+    Deprecated with new contextual suggestions implementation.
+  </obsolete>
   <owner>dgn@chromium.org</owner>
   <owner>galinap@google.com</owner>
   <description>
@@ -18308,6 +18311,9 @@ should be able to be added at any place in this file.
 </action>
 
 <action name="Suggestions.Contextual.Carousel.Shown">
+  <obsolete>
+    Deprecated with new contextual suggestions implementation.
+  </obsolete>
   <owner>dgn@chromium.org</owner>
   <owner>galinap@google.com</owner>
   <description>
@@ -18317,6 +18323,9 @@ should be able to be added at any place in this file.
 </action>
 
 <action name="Suggestions.ContextualSuggestion.Open">
+  <obsolete>
+    Deprecated with new contextual suggestions implementation.
+  </obsolete>
   <owner>dgn@chromium.org</owner>
   <owner>galinap@google.com</owner>
   <description>
@@ -18374,6 +18383,7 @@ should be able to be added at any place in this file.
 </action>
 
 <action name="Suggestions.SurfaceFullyVisible">
+  <obsolete>Deprecated with Chrome Home ramp down.</obsolete>
   <owner>finkm@chromium.org</owner>
   <owner>dgn@chromium.org</owner>
   <description>
@@ -18384,6 +18394,7 @@ should be able to be added at any place in this file.
 </action>
 
 <action name="Suggestions.SurfaceHalfVisible">
+  <obsolete>Deprecated with Chrome Home ramp down.</obsolete>
   <owner>finkm@chromium.org</owner>
   <owner>dgn@chromium.org</owner>
   <description>