Revert of Remove DCHECK_IMPLIES/CHECK_IMPLIES.

cc/test/fake_display_list_raster_source.cc

Index: cc/test/fake_display_list_raster_source.cc
diff --git a/cc/test/fake_display_list_raster_source.cc b/cc/test/fake_display_list_raster_source.cc
index 163559b2f5045796cb162241df2ce1c153cb0e33..de69afac581afa2bcae2e98459e0c07e602db497 100644
--- a/cc/test/fake_display_list_raster_source.cc
+++ b/cc/test/fake_display_list_raster_source.cc
@@ -82,8 +82,8 @@
 FakeDisplayListRasterSource::CreatePartiallyFilled(
     const gfx::Size& size,
     const gfx::Rect& recorded_viewport) {
-  DCHECK(recorded_viewport.IsEmpty() ||
-         gfx::Rect(size).Contains(recorded_viewport));
+  DCHECK_IMPLIES(!recorded_viewport.IsEmpty(),
+                 gfx::Rect(size).Contains(recorded_viewport));
   auto recording_source = FakeDisplayListRecordingSource::CreateRecordingSource(
       recorded_viewport, size);