Reset scale & scroll state after reloading with overridden URL

Reset scale & scroll state after reloading with overridden URL

When reloading a page with an overridden URL, the page's scroll and zoom
state will be restored once the reload is complete.  This is problematic
in situations when switching between mobile and desktop versions of the
same site because it will zoom back in on a random part of alternate page.
This CL just avoids that situation by resetting the zoom and scale whenever
this type of reload occurs.

Webkit half: https://bugs.webkit.org/show_bug.cgi?id=90222
BUG=137004
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=156244

[gone, 2012-08-29 00:07:36]

Hey Darin, turns out it is possible to do it from
WebFrameClient::didCommitProvisionalLoad(), but I had to add a boolean to
DocumentState to know when to do it.  Please take a look when you've got a
chance.

[darin (slow to review), 2012-08-30 16:56:11]

LGTM

https://chromiumcodereview.appspot.com/10889019/diff/1/content/renderer/rende...
File content/renderer/render_view_impl.cc (right):

https://chromiumcodereview.appspot.com/10889019/diff/1/content/renderer/rende...
content/renderer/render_view_impl.cc:2985:
ViewMsg_Navigate_Type::RELOAD_ORIGINAL_REQUEST_URL ==
nit: we generally favor the "variable == constant" form in chromium code even
though that carries with it the risk of accidentally assigning to the variable
if you type "=" instead of "==".  it makes the code match what you would say.

[commit-bot: I haz the power, 2012-09-12 03:52:49]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/dfalcantara@chromium.org/10889019/5002

[commit-bot: I haz the power, 2012-09-12 06:50:36]

Change committed as 156244