Revert of Add crash keys about field trial shared memory errors.

chrome/app/chrome_crash_reporter_client_win.cc

Index: chrome/app/chrome_crash_reporter_client_win.cc
diff --git a/chrome/app/chrome_crash_reporter_client_win.cc b/chrome/app/chrome_crash_reporter_client_win.cc
index 23ed8d8803bce0430312f43d110e2d119b00ca23..6963b31b71be2cef9833962e9a5ec736abf40647 100644
--- a/chrome/app/chrome_crash_reporter_client_win.cc
+++ b/chrome/app/chrome_crash_reporter_client_win.cc
@@ -182,10 +182,6 @@ size_t RegisterCrashKeysHelper() {
       {"engine_params", crash_keys::kMediumSize},
       {"engine1_params", crash_keys::kMediumSize},
       {"engine2_params", crash_keys::kMediumSize},
-
-      // Temporary for http://crbug.com/703649.
-      {"field_trial_shmem_create_error", crash_keys::kSmallSize},
-      {"field_trial_shmem_map_error", crash_keys::kSmallSize},
   };
 
   // This dynamic set of keys is used for sets of key value pairs when gathering