Remove hard coded item id from ContentRetrieverTest

Change-Id: I770b07f70d5294dbd9ca1daea574b62287ddfac7
Remove hard coded item ids from SetSiteLinkTest

Change-Id: I4f19e80c629e554804276892581127f7d9275a12
mock Title in InfoActionHookHandlerTest

Change-Id: I14505de401dfcd534146d0be6a3306b18be0479b
Merge "mock Title in InfoActionHookHandlerTest"