Move InstallObserver::OnBeginExtensionInstall parameters to a struct

chrome/browser/extensions/extension_service_unittest.cc

Index: chrome/browser/extensions/extension_service_unittest.cc
diff --git a/chrome/browser/extensions/extension_service_unittest.cc b/chrome/browser/extensions/extension_service_unittest.cc
index 67695c6facfb3831a63153e9a265bcbdcca3e6aa..dfd193a076b162a1bd6989165b7feca964278e68 100644
--- a/chrome/browser/extensions/extension_service_unittest.cc
+++ b/chrome/browser/extensions/extension_service_unittest.cc
@@ -1698,11 +1698,7 @@ struct MockInstallObserver : public extensions::InstallObserver {
   }
 
   virtual void OnBeginExtensionInstall(
-      const std::string& extension_id,
-      const std::string& extension_name,
-      const gfx::ImageSkia& installing_icon,
-      bool is_app,
-      bool is_platform_app) OVERRIDE {
+      const ExtensionInstallParams& params) OVERRIDE {
   }
 
   virtual void OnDownloadProgress(const std::string& extension_id,