Implement RevokePermission() method in PermissionService.

chrome/browser/content_settings/permission_context_base.cc

Index: chrome/browser/content_settings/permission_context_base.cc
diff --git a/chrome/browser/content_settings/permission_context_base.cc b/chrome/browser/content_settings/permission_context_base.cc
index 45ce75a0411c18d31d177a7b6d126e7ac54eedf4..0524eaea4f35f993a8bf9282d5884dbeeeed0927 100644
--- a/chrome/browser/content_settings/permission_context_base.cc
+++ b/chrome/browser/content_settings/permission_context_base.cc
@@ -55,6 +55,15 @@ ContentSetting PermissionContextBase::GetPermissionStatus(
       requesting_origin, embedding_origin, permission_type_, std::string());
 }
 
+void PermissionContextBase::ResetPermission(
+    const GURL& requesting_origin,
+    const GURL& embedding_origin) {
+  profile_->GetHostContentSettingsMap()->SetContentSetting(
+      ContentSettingsPattern::FromURLNoWildcard(requesting_origin),
+      ContentSettingsPattern::FromURLNoWildcard(embedding_origin),
+      permission_type_, std::string(), CONTENT_SETTING_DEFAULT);
+}
+
 void PermissionContextBase::CancelPermissionRequest(
     content::WebContents* web_contents,
     const PermissionRequestID& id) {
@@ -212,7 +221,7 @@ void PermissionContextBase::UpdateContentSetting(const GURL& requesting_origin,
   DCHECK_EQ(requesting_origin, requesting_origin.GetOrigin());
   DCHECK_EQ(embedding_origin, embedding_origin.GetOrigin());
   ContentSetting content_setting =
-      allowed ? CONTENT_SETTING_ALLOW : CONTENT_SETTING_BLOCK;
+       allowed ? CONTENT_SETTING_ALLOW : CONTENT_SETTING_BLOCK;

[mlamouri (slow - plz ping), 2015/01/26 10:38:17]

nit: I don't think you meant to do that change, you are breaking indentation.

[timvolodine, 2015/01/30 14:07:46]

Done.

   profile_->GetHostContentSettingsMap()->SetContentSetting(
       ContentSettingsPattern::FromURLNoWildcard(requesting_origin),
       ContentSettingsPattern::FromURLNoWildcard(embedding_origin),