Revert 186187 - crashing on Win XP browser_tests with "Access is denied".

> Fix touch scaling for high dpi windows.
> 
> Touch events in windows are always expressed in screen coordinates, even if
> the target app is not dpi-aware. This patch determines the dpi scale used
> by the OS, and re-scales touch events accordingly. 
> 
> In some cases the touch events are sent to the wrong window. This is detected
> and corrected.
> 
> BUG=175542
> 
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=185474
> 
> Review URL: https://chromiumcodereview.appspot.com/12317157

TBR=girard@chromium.org
Review URL: https://codereview.chromium.org/12454004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@186196 0039d316-1c4b-4281-b951-d872f2087c98
4 files changed