predictors: Add a origin for prefetch requests, remove the URL/host settings.

chrome/browser/predictors/resource_prefetch_predictor_android.cc

 // Copyright 2016 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.
 
 #include "chrome/browser/predictors/resource_prefetch_predictor_android.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "chrome/browser/predictors/resource_prefetch_predictor.h"
 #include "chrome/browser/predictors/resource_prefetch_predictor_factory.h"
@@ skipping 29 matching lines @@
 }
 
 static jboolean StartPrefetching(JNIEnv* env,
                                  const JavaParamRef<jclass>& clazz,
                                  const JavaParamRef<jobject>& j_profile,
                                  const JavaParamRef<jstring>& j_url) {
   auto predictor = ResourcePrefetchPredictorFromProfileAndroid(j_profile);
   if (!predictor)
     return false;
   GURL url = GURL(base::android::ConvertJavaStringToUTF16(env, j_url));
-  predictor->StartPrefetching(url);
+  predictor->StartPrefetching(url, PrefetchOrigin::EXTERNAL);
 
   return true;
 }
 
 static jboolean StopPrefetching(JNIEnv* env,
                                 const JavaParamRef<jclass>& clazz,
                                 const JavaParamRef<jobject>& j_profile,
                                 const JavaParamRef<jstring>& j_url) {
   auto predictor = ResourcePrefetchPredictorFromProfileAndroid(j_profile);
   if (!predictor)
     return false;
   GURL url = GURL(base::android::ConvertJavaStringToUTF16(env, j_url));
   predictor->StopPrefetching(url);
 
   return true;
 }
 
 bool RegisterResourcePrefetchPredictor(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace predictors