Remove STANDARD_RIGHTS_REQUIRED from DIB section

BUG=307301

Review URL: https://codereview.chromium.org/140123008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@248653 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 248653
Always use safeCallbackApply to invoke fileSystem API callbacks.

Previously, for API methods where an Entry was provided to the callback,
if the callback throws an exception, it would be printed to the
background page's console. With this change, these exceptions are
reported the same way as those thrown by callbacks to other API methods,
including reporting the call stack to the original call.

BUG=314124

Review URL: https://codereview.chromium.org/146823005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@248654 0039d316-1c4b-4281-b951-d872f2087c98
Add a Debug menu to the aura content shell

This will contain a "Developer Tools" button for now. I hope that I can
eventually add a "Dump render tree" item, but that seems tricky because
there's no IPC for that yet, afaict.

The non-aura (GTK) shell had this functionality.

A lot of this code was inspired by ui/views/examples/menu_example.cc

BUG=

Review URL: https://codereview.chromium.org/151823002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@248656 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 248656
Remove unused dimen and color values.

This CL undoes the mess created by https://chromiumcodereview.appspot.com/24109002

BUG=312471
NOTRY=true

Review URL: https://codereview.chromium.org/151863002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@248658 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 248658