Revert "Turn on collection of Chrome crashes again."

As a temporary work around for bandwidth issues, turning off Chrome
crash collection. crbug.com/527144 covers re-enabling.

This reverts commit 54a830ea2ae7bfe20cb83d257b2075251221f0d0.

BUG=chromium:524814
TEST=None

Change-Id: Ic96f2b056b3806341988a6e087e1afed8fbebf82
Reviewed-on: https://chromium-review.googlesource.com/296468
Commit-Ready: Don Garrett <dgarrett@chromium.org>
Tested-by: Don Garrett <dgarrett@chromium.org>
Reviewed-by: Don Garrett <dgarrett@chromium.org>
diff --git a/client/common_lib/cros/chrome.py b/client/common_lib/cros/chrome.py
index e6315c6..66213f1 100644
--- a/client/common_lib/cros/chrome.py
+++ b/client/common_lib/cros/chrome.py
@@ -4,7 +4,6 @@
 
 import logging, os
 
-from autotest_lib.client.cros import constants
 from autotest_lib.client.bin import utils
 from telemetry.core import cros_interface, exceptions, util
 from telemetry.internal.browser import browser_finder, browser_options
@@ -97,9 +96,10 @@
         b_options.username = self.username
         b_options.password = self.password
 
+        # TODO(dgarrett): Reenable, crbug.com/527144
         # Turn on collection of Chrome coredumps via creation of a magic file.
         # (Without this, Chrome coredumps are trashed.)
-        open(constants.CHROME_CORE_MAGIC_FILE, 'w').close()
+        # open(constants.CHROME_CORE_MAGIC_FILE, 'w').close()
 
         for i in range(num_tries):
             try: