Revert "Disable failing blink_perf.canvas tests."

This reverts commit e9af78d1.

Reason for revert: <INSERT REASONING HERE>

Original change's description:
> Disable failing blink_perf.canvas tests.
> 
> blink_perf.canvas/draw-dynamic-canvas-2d-to-hw-accelerated-canvas-2d_RAF.html?RAF
> everywhere and others on android, mac, and win.
> 
> NOTRY=true
> TBR=crouleau@chromium.org
> BUG=1035865,978500
> CC=​aaronhk@chromium.org,fserb@chromium.org
> 
> Change-Id: I747fb7924f9632edd3bf5f6582e99f028e4fb65e
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1975923
> Reviewed-by: Stephen Nusko <nuskos@chromium.org>
> Commit-Queue: Stephen Nusko <nuskos@chromium.org>
> Auto-Submit: Stephen Nusko <nuskos@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#726395}

TBR=crouleau@chromium.org,nuskos@chromium.org

Change-Id: Idba3ad4cc6838dbcc12b7783e4dc8e57ad301ac1
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1035865, 978500
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1976824Reviewed-by: Stephen Nusko <nuskos@chromium.org>
Commit-Queue: Stephen Nusko <nuskos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#726478}

tools/perf/expectations.config

@@ -60,17 +60,6 @@ crbug.com/994912 [ android-webview ] blink_perf.canvas/transferFromImageBitmap_R
 crbug.com/994912 [ android-webview ] blink_perf.canvas/transferFromImageBitmap.html [ Skip ]
 crbug.com/1013618 [ android ] blink_perf.canvas/putImageData.html [ Skip ]
 crbug.com/1013618 [ android ] blink_perf.canvas/putImageData_RAF.html?RAF [ Skip ]
-crbug.com/1035865 [ android ] blink_perf.canvas/draw-dynamic-canvas-2d-to-hw-accelerated-canvas-2d.html [ Skip ]
-crbug.com/1035865 [ win ] blink_perf.canvas/draw-dynamic-canvas-2d-to-hw-accelerated-canvas-2d.html [ Skip ]
-crbug.com/1035865 [ mac ] blink_perf.canvas/draw-dynamic-canvas-2d-to-hw-accelerated-canvas-2d.html [ Skip ]
-crbug.com/1035865 [ android ] blink_perf.canvas/draw-dynamic-canvas-2d-to-hw-accelerated-canvas-2d_RAF.html?RAF [ Skip ]
-crbug.com/1035865 [ desktop ] blink_perf.canvas/draw-dynamic-canvas-2d-to-hw-accelerated-canvas-2d_RAF.html?RAF [ Skip ]
-crbug.com/1035865 [ win ] blink_perf.canvas/draw-dynamic-webgl-to-hw-accelerated-canvas-2d.html [ Skip ]
-crbug.com/1035865 [ mac ] blink_perf.canvas/draw-dynamic-webgl-to-hw-accelerated-canvas-2d.html [ Skip ]
-crbug.com/1035865 [ android-pixel-2 android-webview ] blink_perf.canvas/draw-dynamic-webgl-to-hw-accelerated-canvas-2d_RAF.html?RAF [ Skip ]
-crbug.com/1035865 [ android-not-webview ] blink_perf.canvas/draw-dynamic-webgl-to-hw-accelerated-canvas-2d_RAF.html?RAF [ Skip ]
-crbug.com/1035865 [ win ] blink_perf.canvas/draw-dynamic-webgl-to-hw-accelerated-canvas-2d_RAF.html?RAF [ Skip ]
-crbug.com/1035865 [ mac ] blink_perf.canvas/draw-dynamic-webgl-to-hw-accelerated-canvas-2d_RAF.html?RAF [ Skip ]
 
 # Benchmark: blink_perf.css
 crbug.com/891878 [ android-nexus-5x android-webview ] blink_perf.css/CustomPropertiesVarAlias.html [ Skip ]