Allow shared modules to whitelist extensions that import them.

chrome/browser/extensions/crx_installer.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/crx_installer.h"
 
 #include <map>
 #include <set>
 
 #include "base/bind.h"
@@ skipping 473 matching lines @@
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   ExtensionService* service = service_weak_.get();
   if (!service || service->browser_terminating())
     return;
 
   if (SharedModuleInfo::ImportsModules(extension())) {
     const std::vector<SharedModuleInfo::ImportInfo>& imports =
         SharedModuleInfo::GetImports(extension());
     std::vector<SharedModuleInfo::ImportInfo>::const_iterator i;
     for (i = imports.begin(); i != imports.end(); ++i) {
-      Version version_required(i->minimum_version);
       const Extension* imported_module =
           service->GetExtensionById(i->extension_id, true);
       if (imported_module &&
           !SharedModuleInfo::IsSharedModule(imported_module)) {
         ReportFailureFromUIThread(
             CrxInstallerError(l10n_util::GetStringFUTF16(
                 IDS_EXTENSION_INSTALL_DEPENDENCY_NOT_SHARED_MODULE,
                 base::ASCIIToUTF16(i->extension_id))));
         return;
+      } else if (imported_module &&
+          !SharedModuleInfo::IsExportAllowedByWhitelist(imported_module,
+                                                        extension()->id())) {
+        ReportFailureFromUIThread(
+            CrxInstallerError(l10n_util::GetStringFUTF16(
+                IDS_EXTENSION_INSTALL_DEPENDENCY_NOT_WHITELISTED,
+                base::ASCIIToUTF16(i->extension_id))));
+        return;
       }
     }
   }
   installer_.CheckRequirements(base::Bind(&CrxInstaller::OnRequirementsChecked,
                                           this));
 }
 
 void CrxInstaller::OnRequirementsChecked(
     std::vector<std::string> requirement_errors) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
@@ skipping 376 matching lines @@
   if (!prefs->DidExtensionEscalatePermissions(extension()->id()))
     return;
 
   if (client_) {
     AddRef();  // Balanced in InstallUIProceed() and InstallUIAbort().
     client_->ConfirmReEnable(this, extension());
   }
 }
 
 }  // namespace extensions