ScrollableArea::pixelStep should return DIP not viewport (physical pixels)

third_party/WebKit/LayoutTests/TestExpectations

 # ====== Oilpan-only failures from here ======
 # Most of these actually cause the tests to report success, rather than
 # failure. Expected outputs will be adjusted for the better once Oilpan
 # has been well and truly enabled always.
 
 # With Oilpan, the parent pointer in the CSSRule hierarchy is
 # strong. This is the intended behavior.
 crbug.com/345630 fast/dom/StyleSheet/gc-parent-rule.html [ Failure ]
 crbug.com/345630 fast/dom/StyleSheet/gc-parent-stylesheet.html [ Failure ]
 crbug.com/345655 fast/dom/StyleSheet/detached-parent-rule-without-wrapper.html [ Failure ]
@@ skipping 258 matching lines @@
 crbug.com/493815 inspector/elements/iframe-load-event.html [ Pass Failure ]
 crbug.com/248938 [ Win Debug ] virtual/threaded/transitions/transition-end-event-multiple-03.html [ Pass Failure ]
 crbug.com/248938 [ Win Debug ] virtual/threaded/transitions/transition-end-event-multiple-04.html [ Pass Failure ]
 crbug.com/352405 virtual/threaded/animations/transition-and-animation-1.html [ Pass Timeout ]
 
 crbug.com/542541 [ Debug ] fast/events/click-count.html [ Pass Failure ]
 crbug.com/542541 [ Debug ] virtual/trustedeventsdefaultaction/fast/events/click-count.html [ Pass Failure ]
 crbug.com/542541 [ Debug ] virtual/pointerevent/fast/events/click-count.html [ Pass Failure ]
 
 crbug.com/495750 virtual/scalefactor200/fast/hidpi/static/ [ NeedsRebaseline ]
 crbug.com/495750 virtual/scalefactor150/fast/hidpi/static/ [ NeedsRebaseline ]

[oshima, 2016/03/03 15:59:51]

The expectation for new tests will be generated if we can land this before
they're rebased. I'll add new lines if they're updated first.

 crbug.com/495750 [ Win Linux ] virtual/scalefactor200withzoom/fast/hidpi/static/ [ NeedsRebaseline ]
 crbug.com/495750 [ Mac Android ] virtual/scalefactor200withzoom/fast/hidpi/static [ Skip ]
 # TODO(oshima): Fix the popup's size adjustmenet.
 crbug.com/495750 [ Mac ] virtual/scalefactor200withzoom/fast/hidpi/static/data-suggestion-picker-appearance.html [ Skip ]
 
+# TODO(oshima): Move the event scaling code to eventSender and remove this.
+crbug.com/495750 virtual/scalefactor200/fast/hidpi/static/mousewheel-scroll-amount.html [ Skip ]
+crbug.com/495750 virtual/scalefactor200/fast/hidpi/static/gesture-scroll-amount.html [ Skip ]
+crbug.com/495750 virtual/scalefactor150/fast/hidpi/static/mousewheel-scroll-amount.html [ Skip ]
+crbug.com/495750 virtual/scalefactor150/fast/hidpi/static/gesture-scroll-amount.html [ Skip ]
+
 # TODO(ojan): These tests aren't flaky. See crbug.com/517144.
 # Release trybots run asserts, but the main waterfall ones don't. So, even
 # though this is a non-flaky assert failure, we need to mark it [ Pass Crash ].
 crbug.com/389648 crbug.com/517123 crbug.com/410145 fast/text-autosizing/table-inflation-crash.html [ Pass Crash Timeout ]
 crbug.com/419696 [ Mac Debug ] fast/text/font-linux-normalize.html [ Crash Pass ]
 crbug.com/524859 fast/text/complex-text-opacity.html [ NeedsManualRebaseline ]
 # crbug.com/498021 [ Linux ] fast/text/complex-text-opacity.html [ Failure ]
 # crbug.com/509025 [ Mac10.10 ] fast/text/complex-text-opacity.html [ Failure ]
 # crbug.com/521730 [ Win10 ] fast/text/complex-text-opacity.html [ Failure Timeout ]
 crbug.com/524859 transforms/2d/hindi-rotated.html [ NeedsManualRebaseline ]
@@ skipping 1096 matching lines @@
 crbug.com/590992 inspector/sources/debugger-step/debugger-step-into-inlined-scripts.html [ Pass Failure ]
 crbug.com/590992 inspector/sources/debugger-step/debugger-step-over-document-write.html [ Pass Failure ]
 crbug.com/590992 inspector/sources/debugger-step/debugger-step-over-inlined-scripts.html [ Pass Failure Timeout ]
 
 crbug.com/257405 fast/js/invalid-syntax-for-function.html [ NeedsManualRebaseline ]
 crbug.com/257405 fast/js/kde/string-1-n.html [ NeedsManualRebaseline ]
 crbug.com/257405 fast/js/kde/string-2-n.html [ NeedsManualRebaseline ]
 crbug.com/257405 fast/regex/non-pattern-characters.html [ NeedsManualRebaseline ]
 crbug.com/257405 http/tests/websocket/bad-sub-protocol-control-chars.html [ NeedsManualRebaseline ]
 crbug.com/257405 inspector/console/console-control-characters.html [ NeedsManualRebaseline ]