Consistently use namespaced base::Version in extensions code.

BUG=639416

Review-Url: https://codereview.chromium.org/2259383002
Cr-Commit-Position: refs/heads/master@{#413496}
diff --git a/chrome/browser/extensions/extension_sync_data_unittest.cc b/chrome/browser/extensions/extension_sync_data_unittest.cc
index bb4837c7..b9c6a715 100644
--- a/chrome/browser/extensions/extension_sync_data_unittest.cc
+++ b/chrome/browser/extensions/extension_sync_data_unittest.cc
@@ -111,7 +111,7 @@
   EXPECT_FALSE(extension_sync_data.remote_install());
   EXPECT_EQ(ExtensionSyncData::BOOLEAN_TRUE,
             extension_sync_data.all_urls_enabled());
-  EXPECT_EQ(Version(kVersion), extension_sync_data.version());
+  EXPECT_EQ(base::Version(kVersion), extension_sync_data.version());
   EXPECT_EQ(std::string(kName), extension_sync_data.name());
 
   // Check the serialize-deserialize process for ExtensionSyncData to proto.