MacViews: Implement capture using NSEvent local+global monitors

ui/gfx/mac/coordinate_conversion_unittest.mm

Index: ui/gfx/mac/coordinate_conversion_unittest.mm
diff --git a/ui/gfx/mac/coordinate_conversion_unittest.mm b/ui/gfx/mac/coordinate_conversion_unittest.mm
index ea0898d2da0b05d516fda5080992e3af8bc059b8..7348e492e1eb20407fe552f580c266fe620e9412 100644
--- a/ui/gfx/mac/coordinate_conversion_unittest.mm
+++ b/ui/gfx/mac/coordinate_conversion_unittest.mm
@@ -104,4 +104,30 @@ TEST_F(MacCoordinateConversionTest, ScreenRectToFromNSRect) {
   EXPECT_EQ(gfx_rect.ToString(), ScreenRectFromNSRect(ns_rect).ToString());
 }
 
+// Test point conversion, using the same setup as above.
+TEST_F(MacCoordinateConversionTest, ScreenPointFromNSPoint) {
+  Point gfx_point = Point(10, 20);
+  NSPoint ns_point = ScreenPointToNSPoint(gfx_point);
+  EXPECT_TRUE(NSEqualPoints(NSMakePoint(10, 180), ns_point));
+  EXPECT_EQ(gfx_point.ToString(), ScreenPointFromNSPoint(ns_point).ToString());
+
+  // Point in a screen to the left of the primary screen.
+  gfx_point = Point(-40, 20);
+  ns_point = ScreenPointToNSPoint(gfx_point);
+  EXPECT_TRUE(NSEqualPoints(NSMakePoint(-40, 180), ns_point));
+  EXPECT_EQ(gfx_point.ToString(), ScreenPointFromNSPoint(ns_point).ToString());
+
+  // Point in a screen below the primary screen.
+  gfx_point = Point(10, 220);
+  ns_point = ScreenPointToNSPoint(gfx_point);
+  EXPECT_TRUE(NSEqualPoints(NSMakePoint(10, -20), ns_point));
+  EXPECT_EQ(gfx_point.ToString(), ScreenPointFromNSPoint(ns_point).ToString());
+
+  // Point in a screen below and to the left primary screen.
+  gfx_point = Point(-40, 220);
+  ns_point = ScreenPointToNSPoint(gfx_point);
+  EXPECT_TRUE(NSEqualPoints(NSMakePoint(-40, -20), ns_point));
+  EXPECT_EQ(gfx_point.ToString(), ScreenPointFromNSPoint(ns_point).ToString());
+}
+
 }  // namespace gfx