Cache DeviceDisplayInfo data in shared structure on native side to avoid frequent JNI calls.

BUG=265008

Partial fix for bug 265008. 

GetDisplayWidth and GetDisplayHeight are called for tile creation.

Review URL: https://codereview.chromium.org/26129009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230472 0039d316-1c4b-4281-b951-d872f2087c98
Fix window class name used for screen reader compatibility.

This was intended to match the window class name used by
render_widget_host_view_win.cc, but it was accidentally committed
with the wrong class name. See bug for context.

BUG=227026
TBR=dtseng
NOTRY=true

Review URL: https://codereview.chromium.org/29003003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230473 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 230473