Add a method to retrieve the top synchronous suggestion.

chrome/android/java/src/org/chromium/chrome/browser/omnibox/AutocompleteController.java

Index: chrome/android/java/src/org/chromium/chrome/browser/omnibox/AutocompleteController.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/omnibox/AutocompleteController.java b/chrome/android/java/src/org/chromium/chrome/browser/omnibox/AutocompleteController.java
index efc9b2c1337b85a7cbf9339f96f292ffbabd23aa..bec2a3a9f2dd46ffaae28df99406ef04a0e502b6 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/omnibox/AutocompleteController.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/omnibox/AutocompleteController.java
@@ -240,6 +240,14 @@ public class AutocompleteController {
                 elapsedTimeSinceInputChange);
     }
 
+    /**
+     * Returns the top synchronous suggestion from the autocomplete controller.
+     * @param query User input text.
+     */
+    public OmniboxSuggestion getTopSynchronousMatch(String query) {
+        return nativeGetTopSynchronousMatch(mNativeAutocompleteControllerAndroid, query);
+    }
+
     @VisibleForTesting
     protected native long nativeInit(Profile profile);
     private native void nativeStart(long nativeAutocompleteControllerAndroid, String text,
@@ -259,6 +267,8 @@ public class AutocompleteController {
             int selectedIndex);
     private native String nativeUpdateMatchDestinationURL(long nativeAutocompleteControllerAndroid,
             int selectedIndex, long elapsedTimeSinceInputChange);
+    private native OmniboxSuggestion nativeGetTopSynchronousMatch(
+            long nativeAutocompleteControllerAndroid, String query);
 
     /**
      * Given a search query, this will attempt to see if the query appears to be portion of a