DevTools: DataGrid: autosize filler when rows fit viewport.

BUG=398332

Review URL: https://codereview.chromium.org/429493002

git-svn-id: svn://svn.chromium.org/blink/trunk@179141 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Deprecate the hspace/vspace attributes on table

Intent to Deprecate:
https://groups.google.com/a/chromium.org/d/msg/blink-dev/l3rZbX-BUaM/3iSlHsjmW0wJ

BUG=277080
R=jochen@chromium.org

Review URL: https://codereview.chromium.org/421263002

git-svn-id: svn://svn.chromium.org/blink/trunk@179142 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Split out  const/non-const variants of Resource::resourceRequest().

This patch follows the general convention of *::resourceRequest() and
*::mutableResourceRequest() from various other classes which use
ResourceRequest objects (FetchRequest, NavigationAction, etc).

As a drive-by, it also consts Resource::lastResourceRequest(), which was
already returning a const reference.

NOTRY=true

Review URL: https://codereview.chromium.org/424083002

git-svn-id: svn://svn.chromium.org/blink/trunk@179143 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: [Elements] Do not copy nodes if there is a non-collapsed selection

This got regressed in r179031

R=aandrey, pfeldman
NOTRY=true

Review URL: https://codereview.chromium.org/413413003

git-svn-id: svn://svn.chromium.org/blink/trunk@179144 bbb929c8-8fbe-4397-9dbb-9b2b20218538