https://bugs.webkit.org/show_bug.cgi?id=61700

https://bugs.webkit.org/show_bug.cgi?id=61700
Need WebKit2 API to get the size of the render tree
-and corresponding-
<rdar://problem/9512733>

Patch by Beth Dakin <bdakin@apple.com> on 2011-05-29
Reviewed by Darin Adler.

New member variable on RenderArena keeps track of the current amount of memory
allocated in the arena. The new client function sends this piece of data to
WebKit.
* page/ChromeClient.h:
(WebCore::ChromeClient::setRenderTreeSize):
* page/FrameView.cpp:
(WebCore::FrameView::performPostLayoutTasks):
* rendering/RenderArena.cpp:
(WebCore::RenderArena::RenderArena):
(WebCore::RenderArena::allocate):
(WebCore::RenderArena::free):
* rendering/RenderArena.h:
(WebCore::RenderArena::totalRenderArenaSize):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@87639 268f45cc-cd09-0410-ab3c-d52691b4dbfc