[SafeBrowsing] Add accessors to provide an API providing SB status of current page.

This change adds the ability for callers to get notified when a page gets an SB hit, or access that information
from the ClientSideDetectionHost.

R=mattm@chromium.org

Review URL: https://codereview.chromium.org/99283004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238997 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 238997
Remove ozone implementation of GpuMemoryBufferImpl

Shared build fails since the _linux and _ozone files are compiled on Ozone, defining the same symbol twice. Removing the ozone implementation since it is identical to the linux one.

TBR=piman
NOTRY=true

Review URL: https://codereview.chromium.org/105393004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238998 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 238998