Skip scalefactor150 tests that are failing on debug build.

third_party/WebKit/LayoutTests/TestExpectations

Index: third_party/WebKit/LayoutTests/TestExpectations
diff --git a/third_party/WebKit/LayoutTests/TestExpectations b/third_party/WebKit/LayoutTests/TestExpectations
index 3ae705de1ccc91ac3ad236f6b2ab2ac45c025432..97f84f7355ed747a10245eea23519397d5926d64 100644
--- a/third_party/WebKit/LayoutTests/TestExpectations
+++ b/third_party/WebKit/LayoutTests/TestExpectations
@@ -274,6 +274,11 @@ crbug.com/542541 [ Debug ] virtual/pointerevent/fast/events/click-count.html [ P
 # TODO(oshima): Mac Android are currently not supported.
 crbug.com/567837 [ Mac Android ] virtual/scalefactor200withzoom/fast/hidpi/static [ Skip ]
 
+# TODO(oshima): Debug build generates slightly different image for these tests.
+crbug.com/593567 [ Debug ] virtual/scalefactor150/fast/hidpi/static/calendar-picker-appearance.html [ Skip ]
+crbug.com/593567 [ Debug ] virtual/scalefactor150/fast/hidpi/static/data-suggestion-picker-appearance.html [ Skip ]
+crbug.com/593567 [ Debug ] virtual/scalefactor150/fast/hidpi/static/popup-menu-appearance.html [ Skip ]
+
 # TODO(oshima): Move the event scaling code to eventSender and remove this.
 crbug.com/567837 virtual/scalefactor200/fast/hidpi/static/mousewheel-scroll-amount.html [ Skip ]
 crbug.com/567837 virtual/scalefactor200/fast/hidpi/static/gesture-scroll-amount.html [ Skip ]