[NTP::SectionOrder] Add category position metric for opened suggestions.

chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsBridge.java

Index: chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsBridge.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsBridge.java b/chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsBridge.java
index 412933c8d45c8d3d677c91bb3ee06da14ebce06f..5d8e27ec9c5bc28a073e613d73764163d037c90b 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsBridge.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsBridge.java
@@ -306,18 +306,18 @@ public class SnippetsBridge implements SuggestionsSource {
     private native void nativeFetch(
             long nativeNTPSnippetsBridge, int category, String[] knownSuggestions);
     private native void nativeDismissSuggestion(long nativeNTPSnippetsBridge, String url,
-            int globalPosition, int category, int categoryPosition, String idWithinCategory);
+            int globalPosition, int category, int positionInCategory, String idWithinCategory);
     private native void nativeDismissCategory(long nativeNTPSnippetsBridge, int category);
     private native void nativeRestoreDismissedCategories(long nativeNTPSnippetsBridge);
     private native void nativeOnPageShown(
             long nativeNTPSnippetsBridge, int[] categories, int[] suggestionsPerCategory);
     private native void nativeOnSuggestionShown(long nativeNTPSnippetsBridge, int globalPosition,
-            int category, int categoryPosition, long publishTimestampMs, float score);
+            int category, int positionInCategory, long publishTimestampMs, float score);
     private native void nativeOnSuggestionOpened(long nativeNTPSnippetsBridge, int globalPosition,
-            int category, int categoryRank, int categoryPosition, long publishTimestampMs,
+            int category, int categoryRank, int positionInCategory, long publishTimestampMs,
             float score, int windowOpenDisposition);
     private native void nativeOnSuggestionMenuOpened(long nativeNTPSnippetsBridge,
-            int globalPosition, int category, int categoryPosition, long publishTimestampMs,
+            int globalPosition, int category, int positionInCategory, long publishTimestampMs,
             float score);
     private native void nativeOnMoreButtonShown(
             long nativeNTPSnippetsBridge, int category, int position);