Rebaseline Pixel_Canvas*LowLatency2D tests, 2/2

This CL reenables the pixel tests disabled in crrev.com/c/1436081 since
the reference images should have been regenerated by now.

Bug: 922218
Change-Id: Ic0f0d054e92be935041a41812507d062a166ae8d
Reviewed-on: https://chromium-review.googlesource.com/c/1437777
Auto-Submit: Miguel Casas <mcasas@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Kenneth Russell <kbr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#626300}

content/test/gpu/gpu_tests/pixel_expectations.py

@@ -27,8 +27,7 @@ class PixelExpectations(GpuTestExpectations):
     self.Skip('Pixel_OffscreenCanvasWebGLSoftwareCompositingWorker',
               ['android'])
     self.Skip('Pixel_CanvasDisplayLinearRGBUnaccelerated2D', ['android'])
-    # Disable temporarily to avoid a collision, https://crbug.com/922218
-    #self.Skip('Pixel_CanvasUnacceleratedLowLatency2D', ['android'])
+    self.Skip('Pixel_CanvasUnacceleratedLowLatency2D', ['android'])
     self.Skip('Pixel_RepeatedWebGLTo2D_SoftwareCompositing', ['android'])
 
     # Tests running with SwiftShader are skipped on platforms where SwiftShader
@@ -136,7 +135,3 @@ class PixelExpectations(GpuTestExpectations):
         ['mac', ('amd', 0x679e)], bug=911413)
     self.Fail('Pixel_Video_MP4_FourColors_Rot_270',
         ['mac', ('amd', 0x679e)], bug=911413)
-
-    # TODO(mcasas): re-enable after rebaselining, https://crbug.com/922218
-    self.Fail('Pixel_CanvasLowLatency2D', bug=922218)
-    self.Fail('Pixel_CanvasUnacceleratedLowLatency2D', bug=922218)