Implement Web Restrictions in WebView.

android_webview/browser/aw_browser_context.h

Index: android_webview/browser/aw_browser_context.h
diff --git a/android_webview/browser/aw_browser_context.h b/android_webview/browser/aw_browser_context.h
index eee1ac23a217f4e0267015084e9d012dd4541955..3f9050712e61143b5e4abee7091aa2e1bc37cee8 100644
--- a/android_webview/browser/aw_browser_context.h
+++ b/android_webview/browser/aw_browser_context.h
@@ -15,7 +15,9 @@
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
+#include "components/prefs/pref_member.h"
 #include "components/visitedlink/browser/visitedlink_delegate.h"
+#include "components/web_restrictions/browser/web_restrictions_client.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/content_browser_client.h"
 #include "net/url_request/url_request_job_factory.h"
@@ -58,6 +60,7 @@ namespace prefs {
 // Used for Kerberos authentication.
 extern const char kAuthAndroidNegotiateAccountType[];
 extern const char kAuthServerWhitelist[];
+extern const char kWebRestrictionsAuthority[];
 
 }  // namespace prefs
 
@@ -96,6 +99,7 @@ class AwBrowserContext : public content::BrowserContext,
   AwMessagePortService* GetMessagePortService();
 
   policy::URLBlacklistManager* GetURLBlacklistManager();
+  web_restrictions::WebRestrictionsClient* GetWebRestrictionProvider();
 
   // content::BrowserContext implementation.
   std::unique_ptr<content::ZoomLevelDelegate> CreateZoomLevelDelegate(
@@ -129,6 +133,8 @@ class AwBrowserContext : public content::BrowserContext,
  private:
   void InitUserPrefService();
   void CreateDataReductionProxyStatisticsIfNecessary();
+  void OnWebRestrictionsAuthorityChanged();
+
   static bool data_reduction_proxy_enabled_;
 
   // Delay, in milliseconds, before removing the legacy cache dir.
@@ -161,6 +167,9 @@ class AwBrowserContext : public content::BrowserContext,
   std::unique_ptr<data_reduction_proxy::DataReductionProxyService>
       data_reduction_proxy_service_;
   std::unique_ptr<content::PermissionManager> permission_manager_;
+  std::unique_ptr<web_restrictions::WebRestrictionsClient>
+      web_restriction_provider_;
+  StringPrefMember web_restrictions_authority_;
 
   DISALLOW_COPY_AND_ASSIGN(AwBrowserContext);
 };