Add a do_not_sync pref to ExtensionPrefs.

Split from https://codereview.chromium.org/308003005/ for extensions
system changes that allows to install a none syncable Extension.

- Add a do_not_sync pref to ExtensionPrefs;
- Add a kInstallFlagDoNotSync that CrxInstaller uses to initialize the pref;
- Update util::ShouldSyncApp and add ShouldSyncExtension to use the pref to skip sync in ExtensionSyncService;

BUG=358791

Review URL: https://codereview.chromium.org/323843003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@277269 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 8 insertions, 1 deletions

diff --git a/chrome/browser/extensions/extension_util.cc b/chrome/browser/extensions/extension_util.cc
index dd28913..45dc740 100644
--- a/chrome/browser/extensions/extension_util.cc
+++ b/chrome/browser/extensions/extension_util.cc
@@ -180,9 +180,16 @@ bool IsAppLaunchableWithoutEnabling(const std::string& extension_id,
       extension_id, ExtensionRegistry::ENABLED) != NULL;
 }
 
+bool ShouldSyncExtension(const Extension* extension,
+                         content::BrowserContext* context) {
+  return sync_helper::IsSyncableExtension(extension) &&
+         !ExtensionPrefs::Get(context)->DoNotSync(extension->id());
+}
+
 bool ShouldSyncApp(const Extension* app, content::BrowserContext* context) {
   return sync_helper::IsSyncableApp(app) &&
-      !util::IsEphemeralApp(app->id(), context);
+         !util::IsEphemeralApp(app->id(), context) &&
+         !ExtensionPrefs::Get(context)->DoNotSync(app->id());
 }
 
 bool IsExtensionIdle(const std::string& extension_id,