[extensions] Stop parsing webstore urls so much

extensions/test/test_extensions_client.h

Index: extensions/test/test_extensions_client.h
diff --git a/extensions/test/test_extensions_client.h b/extensions/test/test_extensions_client.h
index 2c91ae3a589857365c54de3f6ca0b27d8322addb..bc64e56409362a8a71235cd63da9509d85c54451 100644
--- a/extensions/test/test_extensions_client.h
+++ b/extensions/test/test_extensions_client.h
@@ -7,6 +7,7 @@
 
 #include "base/macros.h"
 #include "extensions/common/extensions_client.h"
+#include "url/gurl.h"
 
 namespace extensions {
 
@@ -49,7 +50,7 @@ class TestExtensionsClient : public ExtensionsClient {
   bool ShouldSuppressFatalErrors() const override;
   void RecordDidSuppressFatalError() override;
   std::string GetWebstoreBaseURL() const override;
-  std::string GetWebstoreUpdateURL() const override;
+  const GURL& GetWebstoreUpdateURL() const override;
   bool IsBlacklistUpdateURL(const GURL& url) const override;
   std::set<base::FilePath> GetBrowserImagePaths(
       const Extension* extension) override;
@@ -62,6 +63,8 @@ class TestExtensionsClient : public ExtensionsClient {
 
   std::set<BrowserImagePathsFilter*> browser_image_filters_;
 
+  const GURL webstore_update_url_;
+
   DISALLOW_COPY_AND_ASSIGN(TestExtensionsClient);
 };