extensions: Register 'app' and 'webstore' bindings only if they are available.

chrome/common/extensions/api/extension_api_unittest.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 "extensions/common/extension_api.h"
 
 #include <string>
 #include <vector>
 
 #include "base/file_util.h"
@@ skipping 158 matching lines @@
 
   scoped_refptr<Extension> extension =
       BuildExtension(ExtensionBuilder().Pass()).Build();
 
   for (size_t i = 0; i < ARRAYSIZE_UNSAFE(test_data); ++i) {
     ExtensionAPI api;
     api.RegisterDependencyProvider("api", &api_feature_provider);
     EXPECT_EQ(test_data[i].expect_is_available,
               api.IsAvailableInUntrustedContext(test_data[i].api_full_name,
                                                 extension.get()))
-        << i;
+        << "API: " << test_data[i].api_full_name;
   }
 }
 
 TEST(ExtensionAPITest, APIFeatures) {
   struct {
     std::string api_full_name;
     bool expect_is_available;
     Feature::Context context;
     GURL url;
   } test_data[] = {
@@ skipping 737 matching lines @@
                                          extension.get(),
                                          Feature::BLESSED_EXTENSION_CONTEXT,
                                          GURL()).is_available());
   EXPECT_FALSE(extension_api->IsAvailable("pageAction",
                                           extension.get(),
                                           Feature::BLESSED_EXTENSION_CONTEXT,
                                           GURL()).is_available());
 }
 
 }  // namespace extensions