Implement RevokePermission() method in PermissionService.

chrome/browser/chrome_content_browser_client.h

Index: chrome/browser/chrome_content_browser_client.h
diff --git a/chrome/browser/chrome_content_browser_client.h b/chrome/browser/chrome_content_browser_client.h
index 884ae0d3176e7cba4486f66aae173f5ee7b88a5e..0f3c123a68c7f8fb1711743ad438d67546e47e23 100644
--- a/chrome/browser/chrome_content_browser_client.h
+++ b/chrome/browser/chrome_content_browser_client.h
@@ -18,6 +18,8 @@
 #include "content/public/browser/content_browser_client.h"
 
 class ChromeContentBrowserClientParts;
+class PermissionContextBase;
+class Profile;
 
 namespace base {
 class CommandLine;
@@ -194,6 +196,11 @@ class ChromeContentBrowserClient : public content::ContentBrowserClient {
       content::BrowserContext* browser_context,
       const GURL& requesting_origin,
       const GURL& embedding_origin) override;
+  content::PermissionStatus RevokePermission(
+      content::PermissionType permission,
+      content::BrowserContext* browser_context,
+      const GURL& requesting_origin,
+      const GURL& embedding_origin) override;
   void CancelPermissionRequest(content::PermissionType permission,
                                content::WebContents* web_contents,
                                int bridge_id,
@@ -290,6 +297,11 @@ class ChromeContentBrowserClient : public content::ContentBrowserClient {
       base::Callback<void(bool)> callback,
       bool allow);
 
+  // Returns
+  PermissionContextBase* GetPermissionContextFromProfile(
+      Profile* profile,
+      content::PermissionType permission);
+
 #if defined(ENABLE_EXTENSIONS)
   void GuestPermissionRequestHelper(
       const GURL& url,