[Sheriff] Disable WorkspaceWindowResizerTest.ResizeHistogram

This test has been flaky for a few months.

TBR=oshima@chromium.org

Bug: 1047657
Change-Id: I25ae1733a3407c9f40f907f05505158409437739
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2030961
Commit-Queue: Ioana Pandele <ioanap@chromium.org>
Reviewed-by: Ioana Pandele <ioanap@chromium.org>
Cr-Commit-Position: refs/heads/master@{#737303}

ash/wm/workspace/workspace_window_resizer_unittest.cc

@@ -1905,7 +1905,7 @@ TEST_F(WorkspaceWindowResizerTest, TouchResizeToEdge_BOTTOM) {
             touch_resize_window_->bounds().ToString());
 }
 
-TEST_F(WorkspaceWindowResizerTest, ResizeHistogram) {
+TEST_F(WorkspaceWindowResizerTest, DISABLED_ResizeHistogram) {
   base::HistogramTester histograms;
   window_->SetBounds(gfx::Rect(20, 30, 400, 60));
   std::unique_ptr<WindowResizer> resizer(