Update PushBackUrl() to not take non-const reference.

Instead, take a const reference to the parameter that isn't going to be
modified and a pointer to the output parameter, and reoder the
parameters to put the output parameter at the end.

R=rouslan@chromium.org
BUG=

Review URL: https://codereview.appspot.com/121650043
1 file changed
tree: 666e5159a6c21bfed3b4c895245b0adb64565a3c
  1. cpp/
  2. externals/
  3. java/
  4. testdata/
  5. .gitmodules
  6. codereview.settings