Change the platform app manifest structure.

chrome/common/extensions/manifest_tests/extension_manifests_storage_unittest.cc

Index: chrome/common/extensions/manifest_tests/extension_manifests_storage_unittest.cc
diff --git a/chrome/common/extensions/manifest_tests/extension_manifests_storage_unittest.cc b/chrome/common/extensions/manifest_tests/extension_manifests_storage_unittest.cc
index e020bf05053dd19da2f2be9c4789a5a12823394c..ad2ab7f4d565b94afdb7de38f3a74697f748932e 100644
--- a/chrome/common/extensions/manifest_tests/extension_manifests_storage_unittest.cc
+++ b/chrome/common/extensions/manifest_tests/extension_manifests_storage_unittest.cc
@@ -25,13 +25,7 @@ TEST_F(ExtensionManifestTest, StorageAPIManifestVersionAvailability) {
   // Extension with no manifest version cannot use storage API.
   {
     Manifest manifest(&base_manifest, "test");
-    scoped_refptr<extensions::Extension> extension =
-        LoadAndExpectSuccess(manifest);
-    if (extension.get()) {
-      std::vector<std::string> warnings;
-      warnings.push_back(kManifestVersionError);
-      EXPECT_EQ(warnings, extension->install_warnings());
-    }
+    LoadAndExpectWarning(manifest, kManifestVersionError);
   }
 
   // Extension with manifest version 1 cannot use storage API.
@@ -41,13 +35,7 @@ TEST_F(ExtensionManifestTest, StorageAPIManifestVersionAvailability) {
     manifest_with_version.MergeDictionary(&base_manifest);
 
     Manifest manifest(&manifest_with_version, "test");
-    scoped_refptr<extensions::Extension> extension =
-        LoadAndExpectSuccess(manifest);
-    if (extension.get()) {
-      std::vector<std::string> warnings;
-      warnings.push_back(kManifestVersionError);
-      EXPECT_EQ(warnings, extension->install_warnings());
-    }
+    LoadAndExpectWarning(manifest, kManifestVersionError);
   }
 
   // Extension with manifest version 2 *can* use storage API.
@@ -59,9 +47,6 @@ TEST_F(ExtensionManifestTest, StorageAPIManifestVersionAvailability) {
     Manifest manifest(&manifest_with_version, "test");
     scoped_refptr<extensions::Extension> extension =
         LoadAndExpectSuccess(manifest);
-    if (extension.get()) {
-      std::vector<std::string> empty;
-      EXPECT_EQ(empty, extension->install_warnings());
-    }
+    EXPECT_TRUE(extension->install_warnings().empty());
   }
 }