Fix uninitialized variables introduced in CL 72374.

time_slice_hrs is being used uninitialized at line 459, and this was causing a Run-Time Check failure and crash in Debug versions on Windows.

I don't know whether 0 is the the correct value in this case, but this fixes the crash. mirandac@ will need to review the behavior.

BUG=None
TEST=Run debug version of Chrome on Windows and wait a few seconds.
Review URL: http://codereview.chromium.org/6385004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@72444 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/web_resource/web_resource_service.cc

@@ -399,8 +399,8 @@ void WebResourceService::UnpackPromoSignal(const DictionaryValue& parsed_json) {
       std::string promo_end_string = "";
       std::string promo_string = "";
       std::string promo_build = "";
-      int promo_build_type;
-      int time_slice_hrs;
+      int promo_build_type = 0;
+      int time_slice_hrs = 0;
       for (ListValue::const_iterator tip_iter = answer_list->begin();
            tip_iter != answer_list->end(); ++tip_iter) {
         if (!(*tip_iter)->IsType(Value::TYPE_DICTIONARY))