Anna Eshoo is a great example of a bought-and-paid for Google shill. Her primary donor is Google (technically, :Google employees:) and she's actually actively campaigned for Google on the international stage.
http://www.opensecrets.org/politicians/summary.php?cid=N0000... <- $24k so far this cycle, $34k/top donor last cycle.
And shilling: http://thehill.com/policy/technology/225332-lawmakers-protes... http://www.huffingtonpost.com/2012/11/19/anna-eshoo-zoe-lofg...
The other Congressperson mentioned in both above received $22k from Googlers so far this season, and $32k/top donor last cycle: http://www.opensecrets.org/politicians/summary.php?cid=N0000...
Google doesn't OFFICIALLY endorse anyone, but they buy out of a lot of them.
EDIT: My comments have been rate limited for being unpopular, so my response to the below comment is:
In the 2014 cycle, Googlers donated to 252 members of the House of Representatives, and 64 members of the Senate. Obviously, the majority of which aren't presiding over Silicon Valley.
Here's a list: http://www.opensecrets.org/orgs/toprecips.php?id=D000022008&...