Merge 280354 "Have the Debugger extension api check that it has ..."

> Have the Debugger extension api check that it has access to the tab
> 
> Check PermissionsData::CanAccessTab() prior to attaching the debugger.
> 
> BUG=367567
> 
> Review URL: https://codereview.chromium.org/352523003

TBR=rdevlin.cronin@chromium.org

Review URL: https://codereview.chromium.org/439843002

git-svn-id: svn://svn.chromium.org/chrome/branches/2062/src@287394 0039d316-1c4b-4281-b951-d872f2087c98
11 files changed