Reverted changes made to fix bug 4982074 (Book text display is limited
to about half the available screen.) The Books app sets initial scale to
100%, and since display density for Crespo is 1.5, initial scale was
actually being set to a smaller value in Device Independent Pixel units.
The correct fix is to take display density into account. This fixes bug
5477652: webview scale factor wrong on prime in reddit app.
Change-Id: Ie09172629add7fb28ca6b47d0fd8f6450c5df569
e9841bb45d