Disable --harmony -> --harmony-generators implication

A GC-related bug has started showing up after r15060 that unfortunately
I haven't been able to reproduce.  Disable generators by default for the
Canary push.

R=danno@chromium.org
BUG=

Review URL: https://codereview.chromium.org/16638011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15065 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/flag-definitions.h

@@ -178,7 +178,8 @@ DEFINE_implication(harmony, harmony_symbols)
 DEFINE_implication(harmony, harmony_proxies)
 DEFINE_implication(harmony, harmony_collections)
 DEFINE_implication(harmony, harmony_observation)
-DEFINE_implication(harmony, harmony_generators)
+// TODO(wingo): Re-enable when GC bug that appeared in r15060 is gone.
+// DEFINE_implication(harmony, harmony_generators)
 DEFINE_implication(harmony, harmony_iteration)
 DEFINE_implication(harmony_modules, harmony_scoping)
 DEFINE_implication(harmony_observation, harmony_collections)

test/mjsunit/harmony/iteration-semantics.js

@@ -25,7 +25,7 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Flags: --harmony
+// Flags: --harmony --harmony-generators
 
 // Test for-of semantics.
 

test/mjsunit/mjsunit.status

@@ -46,6 +46,10 @@ regress/regress-crbug-160010: SKIP
 # Deferred stack trace formatting is temporarily disabled.
 stack-traces-gc: PASS || FAIL
 
+##############################################################################
+# TODO(wingo): Re-enable when GC bug from r15060 is solved.
+harmony/generators-iteration: SKIP
+
 ##############################################################################
 # Too slow in debug mode with --stress-opt mode.
 compiler/regress-stacktrace-methods: PASS, SKIP if $mode == debug