Call the Scheduler when opening the NTP.

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 40364ba072b9a2b33d74887057ac8655fbe7a81e..4625b133e6d759f246aafcec3dd53b68e7adb4b4 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
@@ -171,6 +171,14 @@ public class SnippetsBridge implements SuggestionsSource {
         nativeOnMoreButtonClicked(mNativeSnippetsBridge, category, position);
     }
 
+    /**
+     * Notifies the scheduler to adjust the plan due to a newly opened NTP.
+     */
+    public void onNtpInitialized() {
+        assert mNativeSnippetsBridge != 0;
+        nativeOnNTPInitialized(mNativeSnippetsBridge);
+    }
+
     public static void onSuggestionTargetVisited(int category, long visitTimeMs) {
         nativeOnSuggestionTargetVisited(category, visitTimeMs);
     }
@@ -305,5 +313,6 @@ public class SnippetsBridge implements SuggestionsSource {
     private native void nativeOnMoreButtonClicked(
             long nativeNTPSnippetsBridge, int category, int position);
     private static native void nativeOnSuggestionTargetVisited(int category, long visitTimeMs);
+    private static native void nativeOnNTPInitialized(long nativeNTPSnippetsBridge);
     private native void nativeSetObserver(long nativeNTPSnippetsBridge, SnippetsBridge bridge);
 }