Remove //chrome deps from ExtensionDownloader

extensions/browser/test_extensions_browser_client.cc

 // Copyright 2014 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/browser/test_extensions_browser_client.h"
 
 #include "content/public/browser/browser_context.h"
 #include "extensions/browser/app_sorting.h"
 #include "extensions/browser/extension_host_delegate.h"
 #include "extensions/browser/test_runtime_api_delegate.h"
@@ skipping 159 matching lines @@
 }
 
 net::NetLog* TestExtensionsBrowserClient::GetNetLog() {
   return NULL;
 }
 
 ExtensionCache* TestExtensionsBrowserClient::GetExtensionCache() {
   return extension_cache_.get();
 }
 
+bool TestExtensionsBrowserClient::IsBackgroundUpdateAllowed() {
+  return true;
+}
+
+bool TestExtensionsBrowserClient::IsMinBrowserVersionSupported(
+    const std::string& min_version) {
+  return true;
+}
+
 }  // namespace extensions