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

content/browser/web_contents/web_contents_android.cc

Index: content/browser/web_contents/web_contents_android.cc
diff --git a/content/browser/web_contents/web_contents_android.cc b/content/browser/web_contents/web_contents_android.cc
index eff18f919a65abd91711d0f9fdd587bc581f665e..41b1cbe3f3ffc765384454510a3237a8ccd93006 100644
--- a/content/browser/web_contents/web_contents_android.cc
+++ b/content/browser/web_contents/web_contents_android.cc
@@ -264,6 +264,10 @@ void WebContentsAndroid::Paste(JNIEnv* env, jobject obj) {
   web_contents_->Paste();
 }
 
+void WebContentsAndroid::Replace(JNIEnv* env, jobject obj, jstring jstr) {
+  web_contents_->Replace(base::android::ConvertJavaStringToUTF16(env, jstr));
+}
+
 void WebContentsAndroid::SelectAll(JNIEnv* env, jobject obj) {
   web_contents_->SelectAll();
 }