Moved Google Update and install related code to cloud_print/common

cloud_print/virtual_driver/win/virtual_driver_consts.cc

Index: cloud_print/virtual_driver/win/virtual_driver_consts.cc
diff --git a/cloud_print/virtual_driver/win/virtual_driver_consts.cc b/cloud_print/virtual_driver/win/virtual_driver_consts.cc
index 8898043998edb5e035143e5cc1b6f885b482706c..5ce4fc139be1a22baf2c23683c2f281c64706886 100644
--- a/cloud_print/virtual_driver/win/virtual_driver_consts.cc
+++ b/cloud_print/virtual_driver/win/virtual_driver_consts.cc
@@ -10,10 +10,8 @@ namespace cloud_print {
 
 const wchar_t kPortName[] = L"GCP:";
 const size_t kPortNameSize = sizeof(kPortName);
-const wchar_t kGoogleUpdateClientsKey[] = L"SOFTWARE\\Google\\Update\\"
-    L"Clients\\{9B13FA92-1F73-4761-AB78-2C6ADAC3660D}";
-const wchar_t kGoogleUpdateClientStateKey[] = L"SOFTWARE\\Google\\Update\\"
-    L"ClientState\\{9B13FA92-1F73-4761-AB78-2C6ADAC3660D}";
+const wchar_t kGoogleUpdateProductId[] =
+    L"{9B13FA92-1F73-4761-AB78-2C6ADAC3660D}";
 
 }  // namespace cloud_print