<webview>: Disable search web for image context menu item for webviews.

BUG=331466
Test=Load <webview> in a chrome app, right click on it, "Search google
for image" option is not available anymore.

Review URL: https://codereview.chromium.org/145983005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247431 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 247431
Adjust pretty-printing for "Google Drive" path in download option for CrOS.

This is the Google Drive counterpart of what I have done
for local "Downloads" folder in crrev.com/232055.

For multi-profile support, we are rewriting paths that were
unique inside a profile but collides between multiple profiles.
In the Drive folder case, it used to be "/special/drive" but
it will become "/special/drive-<some-id-for-profile>".

BUG=336123

Review URL: https://codereview.chromium.org/148093002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247432 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 247432