Rebaseline low latency canvas2d pixel test

A recent Skia roll made changes to rectangle anti-aliasing. Rebaselining
per Skia owners recommendation. Will reenable test in followup CL.

TBR=kbr@chromium.org

Bug: 914206
Change-Id: I22d1982b6a73c79a3f198370c2f25b47e11ed2bc
Reviewed-on: https://chromium-review.googlesource.com/c/1374512
Commit-Queue: Sunny Sachanandani <sunnyps@chromium.org>
Reviewed-by: Sunny Sachanandani <sunnyps@chromium.org>
Cr-Commit-Position: refs/heads/master@{#616057}

content/test/gpu/gpu_tests/pixel_expectations.py

@@ -148,6 +148,8 @@ class PixelExpectations(GpuTestExpectations):
     self.Fail('Pixel_Video_MP4_FourColors_Rot_270',
         ['mac', ('amd', 0x679e)], bug=911413)
 
+    # TODO(sunnyps): Temporary suppression for rebaselining.
+    self.Fail('Pixel_CanvasLowLatency2D', bug=914206)
     # Fails on Android Nexus 5
-    self.Fail('Pixel_CanvasLowLatency2D',
-        ['android', ('qualcomm', 'Adreno (TM) 330')], bug=914206)
+    # self.Fail('Pixel_CanvasLowLatency2D',
+    #     ['android', ('qualcomm', 'Adreno (TM) 330')], bug=914206)

content/test/gpu/gpu_tests/pixel_test_pages.py

@@ -795,7 +795,7 @@ def ExperimentalCanvasFeaturesPages(base_name):
       'pixel_canvas_low_latency_2d.html',
       base_name + '_CanvasLowLatency2D',
       test_rect=[0, 0, 100, 100],
-      revision=3,
+      revision=4,
       browser_args=browser_args),
 
     PixelTestPage(