Make plugin elements return false from canStartSelection.

third_party/WebKit/LayoutTests/NeverFixTests

 # This file should only include tests that we never intend to fix.
 # There should only be 4 categories of tests here:
 #   1. Test harness tests.
 #   2. Tests enabled by chromium embedders (e.g. Opera).
 #   3. Tests that apply to some platforms but not others.
 #   4. Tests that are too slow in Debug and so we only want to skip them in Debug.
 
 # FIXME: Remove the WontFix keyword and have that be implied. That way, people won't abuse
 # WontFix outside of this file.
 
@@ skipping 88 matching lines @@
 [ Mac Win ] editing/selection/linux_selection_color.html [ WontFix ]
 [ Mac Win ] fast/text/chromium-linux-fontconfig-renderstyle.html [ WontFix ]
 [ Mac Win ] fast/text/international/arabic-vertical-offset.html [ WontFix ]
 [ Mac Win ] fast/text/international/complex-joining-using-gpos.html [ WontFix ]
 [ Mac Win ] fast/text/international/draw-complex-text-from-to.html [ WontFix ]
 [ Mac Win ] svg/text/text-with-geometric-precision.svg [ WontFix ]
 
 # Mac has different fallback behavior so that this test won't work there
 [ Mac ] fast/text/font-cachekey.html [ WontFix ]
 
-# These tests are specific to Android. Because long pressing on disabled/readonly input/textarea
-# won't trigger text selection on Linux/Mac/Windows platforms, hence we need to skip it.
-[ Linux Mac Win ] editing/selection/readonly-disabled-text-selection.html [ WontFix ]
-[ Linux Mac Win ] editing/selection/android-longtap-not-select-empty.html [ WontFix ]
-
 # AAT/mortx shaping not supported on platforms other than Mac
 [ Linux Win Android ] fast/text/aat-morx.html [ WontFix ]
 
 # Tests in media/stable are only supposed to be run as virtual test (see virtual/stable/media).
 media/stable [ WontFix ]
 
 # Only run fake-Android tests on Linux
 [ Mac Win ] virtual/android [ WontFix ]
 
 # We only run it through the virtual gpu test suite.
@@ skipping 61 matching lines @@
 
 # On Linux bold emoji are already supported.
 crbug.com/551843 [ Linux ] fast/text/fallback-traits-fixup.html [ WontFix ]
 crbug.com/551843 [ Linux Win ] fast/text/emoji-font-weight-mac.html [ WontFix ]
 
 # These tests are too slow with our MESA backend.  We can re-enable when we have
 # bots running tests on real hardware. Don't want to just delete these because they
 # pass in the virtual test suite version.
 webkit.org/b/49629 compositing/lots-of-img-layers.html [ WontFix ]
 webkit.org/b/49629 compositing/lots-of-img-layers-with-opacity.html [ WontFix ]