add dependency on v8 to blink_minimal

There's a include dependency on v8 here:
https://code.google.com/p/chromium/codesearch#chromium/src/third_party/WebKit/public/web/WebFrameClient.h&q=webframeclient&sq=package:chromium&type=cs&l=46 that is hit when I switched ppapi targets to referencing blink_minimal instead of blink.

R=jamesr@chromium.org
BUG=237249

Review URL: https://chromiumcodereview.appspot.com/19804011

git-svn-id: svn://svn.chromium.org/blink/trunk@154851 bbb929c8-8fbe-4397-9dbb-9b2b20218538