Improve prerender handling of NavigateParams.
There aren't many uses of extra_headers and use_post, but we shouldn't trigger
prerenders in those cases. Also update params->target_contents after swap and
follow through with chrome::Navigate cleanup code, as SwapInInstantNTP does.
Modify tests to assert the correct WebContents was returned out of
Browser::OpenURL.
BUG=none
TEST=PrerenderBrowserTest.PrerenderExtraHeadersNoSwap
PrerenderBrowserTest.PrerenderBrowserInitiatedPostNoSwap
Review URL: https://codereview.chromium.org/26829003
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@229930 0039d316-1c4b-4281-b951-d872f2087c98
4 files changed
