Disable HandleWarmupFetcherRetryWithConnectionChange

flaky test

Change-Id: Ie570dcde651f4f85530fa5c8cdd2b0cdf5b7ee75
Bug: 974895
TBR: rajendrant@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1666550Reviewed-by: Tarun Bansal <tbansal@chromium.org>
Commit-Queue: Tarun Bansal <tbansal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#670320}

components/data_reduction_proxy/core/browser/data_reduction_proxy_config_unittest.cc

@@ -1241,8 +1241,9 @@ TEST_F(DataReductionProxyConfigTest, HandleWarmupFetcherTimeout) {
       "DataReductionProxy.WarmupURL.FetchInitiated", 2);
 }
 
+// https://crbug.com/974895: Flaky test.
 TEST_F(DataReductionProxyConfigTest,
-       HandleWarmupFetcherRetryWithConnectionChange) {
+       DISABLED_HandleWarmupFetcherRetryWithConnectionChange) {
   // The test manually controls the fetch of warmup URL and the response.
   test_context_->DisableWarmupURLFetchCallback();