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cc: Clamp the fixed thumb size to be at least zero.

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WebKit is providing a negative thumb size sometimes, which causes asserts in
gfx::Size once we re-enable those DCHECKs.

BUG=160799
R=enne


Review URL: https://chromiumcodereview.appspot.com/11365247

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@167766 0039d316-1c4b-4281-b951-d872f2087c98
This commit is contained in:
danakj@chromium.org
2012-11-14 23:35:06 +00:00
parent 2065bce60e
commit e90e1f0211
1 changed files with 3 additions and 1 deletions

4
cc/scrollbar_geometry_stub.cc

@ -4,6 +4,8 @@
#include "cc/scrollbar_geometry_stub.h"
#include <cmath>
using WebKit::WebRect;
using WebKit::WebScrollbar;
using WebKit::WebScrollbarThemeGeometry;
@ -31,7 +33,7 @@ int ScrollbarGeometryStub::thumbPosition(WebScrollbar* scrollbar)
int ScrollbarGeometryStub::thumbLength(WebScrollbar* scrollbar)
{
return m_geometry->thumbLength(scrollbar);
return std::max(0, m_geometry->thumbLength(scrollbar));
}
int ScrollbarGeometryStub::trackPosition(WebScrollbar* scrollbar)