Reland [swarming] Isolate v8 testing.

build/all.gyp

Index: build/all.gyp
diff --git a/build/all.gyp b/build/all.gyp
index 4aeb507dcab73eaa19fed6706746abc134ecc9ff..1640b972e7dfcbd603171ac689bc0872361c6065 100644
--- a/build/all.gyp
+++ b/build/all.gyp
@@ -19,6 +19,16 @@
             '../tools/parser-shell.gyp:parser-shell',
           ],
         }],
+        ['test_isolation_mode != "noop"', {
+          'dependencies': [
+            '../test/default.gyp:*',
+            '../test/developer_default.gyp:*',
+            '../test/intl/intl.gyp:*',
+            '../test/message/message.gyp:*',
+            '../test/mjsunit/mjsunit.gyp:*',
+            '../test/preparser/preparser.gyp:*',
+          ],
+        }],
       ]
     }
   ]