Make Chrome and WebView replace the selected text with the processed text.

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

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.content.browser;
 
 import android.content.ActivityNotFoundException;
 import android.content.Context;
 import android.content.Intent;
 import android.view.KeyEvent;
@@ skipping 87 matching lines @@
     /**
      * If this returns {@code true} contextual web search attempts will be forwarded to
      * {@link #performWebSearch(String)}.
      * @return {@code true} iff this {@link ContentViewClient} wants to consume web search queries
      *         and override the default intent behavior.
      */
     public boolean doesPerformWebSearch() {
         return false;
     }
 
+    public boolean doesPerformProcessText() {

[jdduke (slow), 2015/10/22 00:43:56]

Javadoc, preferably with a bit more context behind usage here.

[hush (inactive), 2015/10/22 19:27:37]

Done.

+        return false;
+    }
+
     /**
+     * Send the intent to process the current selected text.
+     */
+    public void startProcessTextIntent(Intent intent) {}
+
+    /**
      * Called when a new content intent is requested to be started.
      */
     public void onStartContentIntent(Context context, String intentUrl) {
         Intent intent;
         // Perform generic parsing of the URI to turn it into an Intent.
         try {
             intent = Intent.parseUri(intentUrl, Intent.URI_INTENT_SCHEME);
         } catch (Exception ex) {
             Log.w(TAG, "Bad URI %s", intentUrl, ex);
             return;
@@ skipping 62 matching lines @@
      * ContentViewClient users can return a custom value to override the height of
      * the ContentView. By default, this method returns MeasureSpec.UNSPECIFIED, which
      * indicates that the value should not be overridden.
      *
      * @return The desired height of the ContentView.
      */
     public int getDesiredHeightMeasureSpec() {
         return UNSPECIFIED_MEASURE_SPEC;
     }
 }