Apps&Extensions for supervised users: Add Extension::WAS_INSTALLED_BY_CUSTODIAN flag and proto entry.

Currently, supervised users can not use Apps/Extensions at all. In the future, their custodian will be able to remotely install Apps/Extensions for them. This CL introduces a new extension flag and corresponding proto entry that marks these extensions, so we can allow only those in the client.

Relevant design doc section: https://docs.google.com/a/google.com/document/d/1rqahhrErR_HiZ04v-Skb_kvXeyOfnTvBPFvKwAxuf10/edit#heading=h.ptivtbjwlda5

BUG=390520

Review URL: https://codereview.chromium.org/353493002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@283522 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 7 insertions, 0 deletions

diff --git a/extensions/common/extension.h b/extensions/common/extension.h
index 933c47c..c24cb21 100644
--- a/extensions/common/extension.h
+++ b/extensions/common/extension.h
@@ -170,6 +170,10 @@ class Extension : public base::RefCountedThreadSafe<Extension> {
     // also installed by Default (i.e. WAS_INSTALLED_BY_DEFAULT is also true).
     WAS_INSTALLED_BY_OEM = 1 << 10,
 
+    // |WAS_INSTALLED_BY_CUSTODIAN| means this extension was installed by the
+    // custodian of a supervised user.
+    WAS_INSTALLED_BY_CUSTODIAN = 1 << 11,
+
     // When adding new flags, make sure to update kInitFromValueFlagBits.
   };
 
@@ -334,6 +338,9 @@ class Extension : public base::RefCountedThreadSafe<Extension> {
   bool was_installed_by_oem() const {
     return (creation_flags_ & WAS_INSTALLED_BY_OEM) != 0;
   }
+  bool was_installed_by_custodian() const {
+    return (creation_flags_ & WAS_INSTALLED_BY_CUSTODIAN) != 0;
+  }
 
   // App-related.
   bool is_app() const;