Google can only do those rights. They cannot sell your content, for example, because it is not enumerated in the list.
Dropbox, on the other hand, could, theoretically decide that they want to sell your information as a part of the service, and their TOS allows it.
Also keep in mind that this is Google's unified TOS for ALL Google services and products. So it includes Youtube and Google Music, both of which require those rights in order to function.
Dropbox, on the other hand, could, theoretically decide that they want to sell your information as a part of the service, and their TOS allows it.
Also keep in mind that this is Google's unified TOS for ALL Google services and products. So it includes Youtube and Google Music, both of which require those rights in order to function.