Triage failing ::file-selector-button test.

Pseudo element was renamed. Use the same crbug issue and reintroduce the
expectation line in the same place it was removed from.

Bug: 1086855
Change-Id: Ib9a258d8f2a494bdfc791d406a1f3eed5073e505
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2390915
Auto-Submit: Rune Lillesveen <futhark@chromium.org>
Commit-Queue: Xiaocheng Hu <xiaochengh@chromium.org>
Reviewed-by: Xiaocheng Hu <xiaochengh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#804381}

third_party/blink/web_tests/TestExpectations

@@ -2525,6 +2525,7 @@ crbug.com/1074547 external/wpt/css/css-transitions/transitioncancel-002.html [ T
 crbug.com/1078474 external/wpt/css/css-pseudo/cascade-highlight-001.html [ Failure ]
 crbug.com/1078474 external/wpt/css/css-pseudo/cascade-highlight-002.html [ Failure ]
 crbug.com/1024156 external/wpt/css/css-pseudo/cascade-highlight-004.html [ Failure ]
+crbug.com/1086855 external/wpt/css/css-pseudo/file-selector-button-001.tentative.html [ Failure ]
 crbug.com/1113004 external/wpt/css/css-pseudo/active-selection-043.html [ Failure ]
 crbug.com/1100119 [ Mac ] external/wpt/css/css-pseudo/active-selection-051.html [ Failure ]
 crbug.com/1100119 [ Mac ] external/wpt/css/css-pseudo/active-selection-052.html [ Failure ]
@@ -2543,7 +2544,6 @@ crbug.com/1110512 external/wpt/css/css-pseudo/selection-contenteditable-011.html
 crbug.com/1105958 external/wpt/payment-request/payment-is-showing.https.html [ Timeout ]
 
 # ====== New tests from wpt-importer added here ======
-crbug.com/626703 external/wpt/css/css-pseudo/file-selector-button-001.tentative.html [ Failure ]
 crbug.com/626703 [ Mac10.13 ] external/wpt/pointerevents/compat/pointerevent_mouse-pointer-preventdefault.html [ Timeout Pass Failure ]
 crbug.com/626703 [ Mac10.14 ] external/wpt/pointerevents/compat/pointerevent_mouse-pointer-preventdefault.html [ Timeout ]
 crbug.com/626703 [ Mac10.15 ] external/wpt/pointerevents/compat/pointerevent_mouse-pointer-preventdefault.html [ Timeout Pass Failure ]