Ignoring alignment when it pushes a window out of the screen

chrome/browser/ui/views/ash/window_positioner_unittest.cc

Index: chrome/browser/ui/views/ash/window_positioner_unittest.cc
diff --git a/chrome/browser/ui/views/ash/window_positioner_unittest.cc b/chrome/browser/ui/views/ash/window_positioner_unittest.cc
index 943f4bda771b47689e537ecffdcfb4e4f9aff88a..c108d3c469ce119c5d41ac3cc1ab7d6b5fbd178e 100644
--- a/chrome/browser/ui/views/ash/window_positioner_unittest.cc
+++ b/chrome/browser/ui/views/ash/window_positioner_unittest.cc
@@ -28,6 +28,14 @@ namespace test {
 
 namespace {
 
+// A function which aligns a size to a step within the grid.
+int align(int size, int alignment_factor) {
+  if (alignment_factor > 1) {
+    return size - size % alignment_factor;
+  }
+  return size;
+}
+
 // A browser window proxy which is able to associate an aura native window with
 // it.
 class TestBrowserWindowAura : public TestBrowserWindow {
@@ -251,7 +259,7 @@ TEST_F(WindowPositionerTest, cascading) {
 
 TEST_F(WindowPositionerTest, filling) {
   const gfx::Rect work_area = gfx::Screen::GetPrimaryMonitorWorkArea();
-
+  int grid = ash::Shell::GetInstance()->GetGridSize();
   gfx::Rect popup_position(0, 0, 256, 128);
   // Leave space on the left and the right and see if we fill top to bottom.
   window()->SetBounds(gfx::Rect(work_area.x() + popup_position.width(),
@@ -276,14 +284,16 @@ TEST_F(WindowPositionerTest, filling) {
 
   // Block now everything so that we can only put the popup on the bottom
   // of the left side.
+  // Note: We need to keep one "grid spacing free" if the window does not
+  // fit into the grid (which is true for 200 height).`
   popup()->SetBounds(gfx::Rect(work_area.x(), work_area.y(),
                                popup_position.width(),
-                               work_area.height() - popup_position.height()));
+                               work_area.height() - popup_position.height() -
+                                   grid + 1));
   gfx::Rect bottom_left = window_positioner()->GetPopupPosition(
                               popup_position);
   EXPECT_EQ(gfx::Rect(work_area.x(),
-                      work_area.y() + work_area.height() -
-                          popup_position.height(),
+                      work_area.bottom() - popup_position.height(),
                       popup_position.width(), popup_position.height()),
                       bottom_left);
 
@@ -294,8 +304,8 @@ TEST_F(WindowPositionerTest, filling) {
                                1));
   gfx::Rect top_right = window_positioner()->GetPopupPosition(
                             popup_position);
-  EXPECT_EQ(gfx::Rect(work_area.x() + work_area.width() -
-                          popup_position.width(),
+  EXPECT_EQ(gfx::Rect(align(work_area.right() -
+                            popup_position.width(), grid),
                       work_area.y(),
                       popup_position.width(), popup_position.height()),
                       top_right);