Implement Web Restrictions in WebView.

android_webview/browser/aw_browser_context.cc

Index: android_webview/browser/aw_browser_context.cc
diff --git a/android_webview/browser/aw_browser_context.cc b/android_webview/browser/aw_browser_context.cc
index a66d83761a8ff890e51dadccbd14f18e7404bf3f..fe3ea790e2b10f60d1038adc0fabefbfcea5c526 100644
--- a/android_webview/browser/aw_browser_context.cc
+++ b/android_webview/browser/aw_browser_context.cc
@@ -32,6 +32,7 @@
 #include "components/policy/core/browser/url_blacklist_manager.h"
 #include "components/pref_registry/pref_registry_syncable.h"
 #include "components/prefs/in_memory_pref_store.h"
+#include "components/prefs/pref_change_registrar.h"
 #include "components/prefs/pref_service.h"
 #include "components/prefs/pref_service_factory.h"
 #include "components/url_formatter/url_fixer.h"
@@ -59,6 +60,8 @@ const char kAuthAndroidNegotiateAccountType[] =
 // Whitelist containing servers for which Integrated Authentication is enabled.
 const char kAuthServerWhitelist[] = "auth.server_whitelist";
 
+const char kWebRestrictionsAuthority[] = "web_restrictions_authority";
+
 }  // namespace prefs
 
 namespace {
@@ -263,6 +266,19 @@ void AwBrowserContext::PreMainMessageLoopRun() {
       content::BrowserContext::GetDefaultStoragePartition(this)->
           GetURLRequestContext(),
       guid_file_path);
+  web_restriction_provider_.reset(
+      new web_restrictions::WebRestrictionsClient());
+  pref_change_registrar_->Add(
+      prefs::kWebRestrictionsAuthority,
+      base::Bind(&AwBrowserContext::OnWebRestrictionsAuthorityChanged,
+                 base::Unretained(this)));
+  web_restriction_provider_->SetAuthority(
+      user_pref_service_->GetString(prefs::kWebRestrictionsAuthority));
+}
+
+void AwBrowserContext::OnWebRestrictionsAuthorityChanged() {
+  web_restriction_provider_->SetAuthority(
+      user_pref_service_->GetString(prefs::kWebRestrictionsAuthority));
 }
 
 void AwBrowserContext::AddVisitedURLs(const std::vector<GURL>& urls) {
@@ -318,6 +334,8 @@ void AwBrowserContext::InitUserPrefService() {
   pref_registry->RegisterStringPref(prefs::kAuthServerWhitelist, std::string());
   pref_registry->RegisterStringPref(prefs::kAuthAndroidNegotiateAccountType,
                                     std::string());
+  pref_registry->RegisterStringPref(prefs::kWebRestrictionsAuthority,
+                                    std::string());
 
   metrics::MetricsService::RegisterPrefs(pref_registry);
 
@@ -331,6 +349,8 @@ void AwBrowserContext::InitUserPrefService() {
           policy::POLICY_LEVEL_MANDATORY)));
   pref_service_factory.set_read_error_callback(base::Bind(&HandleReadError));
   user_pref_service_ = pref_service_factory.Create(pref_registry);
+  pref_change_registrar_.reset(new PrefChangeRegistrar);
+  pref_change_registrar_->Init(user_pref_service_.get());
 
   user_prefs::UserPrefs::Set(this, user_pref_service_.get());
 }
@@ -438,6 +458,12 @@ policy::URLBlacklistManager* AwBrowserContext::GetURLBlacklistManager() {
   return blacklist_manager_.get();
 }
 
+web_restrictions::WebRestrictionsClient*
+AwBrowserContext::GetWebRestrictionProvider() {
+  DCHECK(web_restriction_provider_);
+  return web_restriction_provider_.get();
+}
+
 void AwBrowserContext::RebuildTable(
     const scoped_refptr<URLEnumerator>& enumerator) {
   // Android WebView rebuilds from WebChromeClient.getVisitedHistory. The client