Hook up new distillability signal to DistillablePageUtils

components/dom_distiller/content/browser/distillable_page_utils_android.cc

Index: components/dom_distiller/content/browser/distillable_page_utils_android.cc
diff --git a/components/dom_distiller/content/browser/distillable_page_utils_android.cc b/components/dom_distiller/content/browser/distillable_page_utils_android.cc
index 56dfffaf18ec47497acac7f153272cbd42e6989d..0b48f85c0bbe74dae25d658a4e33096bc0ad2309 100644
--- a/components/dom_distiller/content/browser/distillable_page_utils_android.cc
+++ b/components/dom_distiller/content/browser/distillable_page_utils_android.cc
@@ -22,6 +22,14 @@ void OnIsPageDistillableResult(
       base::android::AttachCurrentThread(), callback_holder->obj(),
       isDistillable);
 }
+
+void OnIsPageDistillableUpdate(
+    ScopedJavaGlobalRef<jobject>* callback_holder,
+    bool isDistillable, bool isLast) {
+  Java_DistillablePageUtils_callOnIsPageDistillableUpdate(
+      base::android::AttachCurrentThread(), callback_holder->obj(),
+      isDistillable, isLast);
+}
 }  // namespace
 
 static void IsPageDistillable(JNIEnv* env,
@@ -46,6 +54,26 @@ static void IsPageDistillable(JNIEnv* env,
       base::Bind(OnIsPageDistillableResult, base::Passed(&callback_holder)));
 }
 
+static void SetDelegate(JNIEnv* env,
+                        const JavaParamRef<jclass>& jcaller,
+                        const JavaParamRef<jobject>& webContents,
+                        const JavaParamRef<jobject>& callback) {
+  content::WebContents* web_contents(
+      content::WebContents::FromJavaWebContents(webContents));
+  if (!web_contents) {
+    return;
+  }
+
+  // TODO(wychen): check memory management
+  ScopedJavaGlobalRef<jobject>* callback_holder(
+      new ScopedJavaGlobalRef<jobject>());
+  callback_holder->Reset(env, callback);
+
+  DistillabilityDelegate delegate =
+      base::Bind(OnIsPageDistillableUpdate, base::Owned(callback_holder));
+  setDelegate(web_contents, delegate);
+}
+
 bool RegisterDistillablePageUtils(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }