[SmartText selection] Implement TextClassifier getter and setter

content/public/android/java/src/org/chromium/content/browser/ContentClassFactory.java

Index: content/public/android/java/src/org/chromium/content/browser/ContentClassFactory.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/ContentClassFactory.java b/content/public/android/java/src/org/chromium/content/browser/ContentClassFactory.java
index ba2a78d798f194d63249ab170569a840a0b3d15d..3625d1c53386c2d05798683ee37d4e279befea54 100644
--- a/content/public/android/java/src/org/chromium/content/browser/ContentClassFactory.java
+++ b/content/public/android/java/src/org/chromium/content/browser/ContentClassFactory.java
@@ -4,8 +4,10 @@
 
 package org.chromium.content.browser;
 
+import android.content.Context;
+
 import org.chromium.base.ThreadUtils;
-import org.chromium.ui.base.WindowAndroid;
+import org.chromium.content_public.browser.TextClassifierProvider;
 
 /**
  * A class factory for content browser layer.
@@ -38,10 +40,19 @@ public class ContentClassFactory {
     protected ContentClassFactory() {}
 
     /**
-     * Creates ContextSelectorProvider object.
+     * Creates TextClassifierProvider object.
+     */
+    public TextClassifierProvider createTextClassifierProvider(Context context) {
+        // Implemented by a subclass.
+        return null;
+    }
+
+    /**
+     * Creates ContextSelectionProvider object.
      */
     public ContextSelectionProvider createContextSelectionProvider(
-            ContextSelectionProvider.ResultCallback callback, WindowAndroid windowAndroid) {
+            ContextSelectionProvider.ResultCallback callback,
+            TextClassifierProvider textClassifierProvider) {
         // Implemented by a subclass.
         return null;
     }