Refactor: remove SetDisplayWorkAreaInsets calls.

ash/display/window_tree_host_manager_unittest.cc

Index: ash/display/window_tree_host_manager_unittest.cc
diff --git a/ash/display/window_tree_host_manager_unittest.cc b/ash/display/window_tree_host_manager_unittest.cc
index 25a2fa29dc49b0da672632455ade032c6e2d906e..daf234affcb9de73a97da308cb0414d3cdc314d2 100644
--- a/ash/display/window_tree_host_manager_unittest.cc
+++ b/ash/display/window_tree_host_manager_unittest.cc
@@ -417,7 +417,7 @@ TEST_P(WindowTreeHostManagerTest, SecondaryDisplayLayout) {
   UpdateDisplay("500x500,400x400");
   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
-  EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
+  EXPECT_EQ(2, observer.GetWorkareaChangedCountAndReset());
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
   gfx::Insets insets(5, 5, 5, 5);
@@ -436,7 +436,7 @@ TEST_P(WindowTreeHostManagerTest, SecondaryDisplayLayout) {
   SetSecondaryDisplayLayout(display::DisplayPlacement::BOTTOM);
   EXPECT_EQ(1, observer.CountAndReset());
   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
-  EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
+  EXPECT_EQ(2, observer.GetWorkareaChangedCountAndReset());

[oshima, 2016/07/26 20:53:03]

I didn't expect this will change because moving the window should update the
workarea at the same time. Do you know how the 2nd one gets triggered?

[hariank, 2016/07/26 22:05:16]

added todo

   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());