Make chromium_builder_tests depend on all_blink

This is necessary so chromium buildbots and tryservers can run blink's unit
tests.

BUG=248008
R=thakis@chromium.org

Review URL: https://codereview.chromium.org/16299005

git-svn-id: http://src.chromium.org/svn/trunk/src/build@205242 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

all.gyp

@@ -240,6 +240,7 @@
             '../third_party/cacheinvalidation/cacheinvalidation.gyp:cacheinvalidation_unittests',
             '../third_party/libphonenumber/libphonenumber.gyp:libphonenumber_unittests',
             '../webkit/renderer/compositor_bindings/compositor_bindings_tests.gyp:webkit_compositor_bindings_unittests',
+            '../third_party/WebKit/public/all.gyp:all_blink',
           ],
         }],
         ['OS=="win"', {