Bug 1618202 - Some minor reftest annotation tweaks.

MANUAL PUSH: Trying to get the android stuff to stick once again.

layout/reftests/forms/input/datetime/reftest.list

@@ -11,7 +11,7 @@ defaults pref(dom.forms.datetime,true)
 
 # content should not overflow on small width/height
 == time-small-width.html time-small-width-ref.html
-fuzzy-if(!nativeThemePref,25-25,2-2) == time-small-height.html time-small-height-ref.html # Minor outline 1px shift
+fuzzy-if(!nativeThemePref,0-25,0-2) == time-small-height.html time-small-height-ref.html # Minor outline 1px shift
 == time-small-width-height.html time-small-width-height-ref.html
 
 # content (text) should be left aligned

layout/reftests/forms/reftest.list

@@ -4,7 +4,7 @@ fuzzy-if(cocoaWidget,0-18,0-68) fuzzy-if(Android,0-52,0-64) fuzzy-if(winWidget,0
 == display-block-baselines-3.html display-block-baselines-3-ref.html
 == display-block-baselines-4.html display-block-baselines-4-ref.html
 fuzzy-if(Android,0-4,0-8) fuzzy-if(skiaContent,0-7,0-2) == display-block-baselines-5.html display-block-baselines-5-ref.html
-fails-if(cocoaWidget) == overflow.html overflow-ref.html # bug 1620120
+fails-if(cocoaWidget) fuzzy-if(!nativeThemePref,0-1,0-3) == overflow.html overflow-ref.html # bug 1620120 for cocoa
 
 # button element
 include button/reftest.list