Enforce the 'requirements' field in manifests.

chrome/browser/extensions/updater/extension_updater.cc

Index: chrome/browser/extensions/updater/extension_updater.cc
diff --git a/chrome/browser/extensions/updater/extension_updater.cc b/chrome/browser/extensions/updater/extension_updater.cc
index ef82538cb0a4585105377c5e1c446bc6cc371701..2873973d269102f808d6dfc57d1797123740c644 100644
--- a/chrome/browser/extensions/updater/extension_updater.cc
+++ b/chrome/browser/extensions/updater/extension_updater.cc
@@ -87,15 +87,18 @@ namespace extensions {
 
 ExtensionUpdater::FetchedCRXFile::FetchedCRXFile(const std::string& i,
                                                  const FilePath& p,
-                                                 const GURL& u)
+                                                 const GURL& u,
+                                                 bool is_sync)
     : id(i),
       path(p),
-      download_url(u) {}
+      download_url(u),
+      is_sync(is_sync) {}
 
 ExtensionUpdater::FetchedCRXFile::FetchedCRXFile()
     : id(""),
       path(),
-      download_url() {}
+      download_url(),
+      is_sync(false) {}
 
 ExtensionUpdater::FetchedCRXFile::~FetchedCRXFile() {}
 
@@ -310,7 +313,8 @@ void ExtensionUpdater::CheckNow() {
       VLOG(2) << "Extension " << *iter << " is not auto updateable";
       continue;
     }
-    if (downloader_->AddPendingExtension(*iter, info->update_url()))
+    if (downloader_->AddPendingExtension(*iter, info->update_url(),
+                                         info->is_from_sync()))
       in_progress_ids_.push_back(*iter);
   }
 
@@ -346,13 +350,14 @@ void ExtensionUpdater::OnExtensionDownloadFinished(const std::string& id,
                                                    const FilePath& path,
                                                    const GURL& download_url,
                                                    const std::string& version,
-                                                   const PingResult& ping) {
+                                                   const PingResult& ping,
+                                                   const bool is_sync) {
   DCHECK(alive_);
   UpdatePingData(id, ping);
 
   VLOG(2) << download_url << " written to " << path.value();
 
-  FetchedCRXFile fetched(id, path, download_url);
+  FetchedCRXFile fetched(id, path, download_url, is_sync);
   fetched_crx_files_.push(fetched);
 
   // MaybeInstallCRXFile() removes extensions from |in_progress_ids_| after