Move website settings fetching from WebsitePreferences to new WebsitePermissionFetcher.

chrome/browser/android/preferences/website_address.cc

+// Copyright 2015 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/android/preferences/website_address.h"
+
+#include "base/android/jni_string.h"
+#include "components/content_settings/core/common/content_settings_pattern.h"
+#include "jni/WebsiteAddress_jni.h"
+#include "url/gurl.h"
+
+jboolean HasSameContentSettingsOrigin(JNIEnv* env,
+                                      jclass clazz,
+                                      jstring url1,
+                                      jstring url2) {
+  // This uses the same origin matching logic as many of the content settings.
+  // TODO(sashab): Remove this and individually fetch origin settings in
+  // WebsitePermissionsFetcher instead of filtering afterwards this way.
+  GURL gurl1 = GURL(base::android::ConvertJavaStringToUTF8(env, url1));
+  GURL gurl2 = GURL(base::android::ConvertJavaStringToUTF8(env, url2));
+  return ContentSettingsPattern::FromURL(gurl1).Matches(gurl2);

[Peter Beverloo, 2015/02/17 15:06:46]

We should verify that this in fact works for most of the content settings. The
issue right now is that we're storing them differently, which means that
"https://google.com", "https://google.com:443" and some other combinations are
not always considered the same. This may also impact updating existing content
settings.

[sashab, 2015/02/18 05:28:32]

Agreed. Maybe the best thing to do for now is just have the logic in here that
we have in the other part of the code: if its HTTPS and ends in 443, or HTTP and
ends in 80, remove the port.

Alternatively, if you look at ContentSettingsPattern, you could create a matcher
for URL1 that matches on scheme/host/port (guessing the port where it is not
specified) and try to match that to URL2. If it matches then its definitely from
the same origin.

[Michael van Ouwerkerk, 2015/02/18 19:57:39]

Verified that this works for the single site screen's purposes, using this page
as a test:
http://dontcallmedom.github.io/web-permissions-req/tests/all.html

[Michael van Ouwerkerk, 2015/02/18 19:57:39]

Acknowledged.

+}
+
+// Register native methods
+bool RegisterWebsiteAddress(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}