Fix broken argument for spdy proxy.
Fix broken argument for spdy proxy.

Review URL: http://codereview.chromium.org/6613034

git-svn-id: abd770af2affaf62930f25b244f6edafe8ddae5b@343 164481a5-15cb-f69f-4b93-856c5b7754c5

snorp/web-page-replay,andrey-malets/web-page-replay,ting-yuan/web-page-replay,andrey-malets/web-page-replay,bpsinc-native/src_third_party_webpagereplay,colin-scott/web-page-replay,bpsinc-native/src_third_party_webpagereplay,snorp/web-page-replay,bpsinc-native/src_third_party_webpagereplay,chromium/web-page-replay,colin-scott/web-page-replay,chromium/web-page-replay,ting-yuan/web-page-replay