Unbundle DevTools frontend from Content Shell on Android

As per our decision in the bug, there is no reason for bundling
DevTools FE with Content Shell on Android. Unbundling it makes
Content Shell compatible with chrome://inspect page.

BUG=289233

Review URL: https://codereview.chromium.org/96903002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238090 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 238090
Add root deletion support in LocalFileSyncService::ApplyRemoteChange

BUG=324697
TEST=LocalFileSyncContextTest.ApplyRemoteChangeForDeletion_ForRoot

Review URL: https://codereview.chromium.org/98243004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238091 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 238091