Refactor UpdatePrintableSizeInPrintParameters() function in print_web_view_helper.cc
Refactor UpdatePrintableSizeInPrintParameters() function in print_web_view_helper.cc

BUG=none
TEST=printing works after code changes.

Review URL: http://codereview.chromium.org/6165004

git-svn-id: http://src.chromium.org/svn/trunk/src@71186 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 1071a76fa91b545bfa2f881a55422673d8b2f89b
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser