MacViews: Fix accessibility hit tests, provide AXTitle

ui/views/widget/native_widget_mac_unittest.mm

Index: ui/views/widget/native_widget_mac_unittest.mm
diff --git a/ui/views/widget/native_widget_mac_unittest.mm b/ui/views/widget/native_widget_mac_unittest.mm
index 7593f985fc20d650fb38e0bb51c00b8e92263ee0..af715a15d7deeff67abb15607e163927b1d9cea7 100644
--- a/ui/views/widget/native_widget_mac_unittest.mm
+++ b/ui/views/widget/native_widget_mac_unittest.mm
@@ -7,8 +7,12 @@
 #import <Cocoa/Cocoa.h>
 
 #include "base/run_loop.h"
+#include "base/strings/utf_string_conversions.h"
+#import "testing/gtest_mac.h"
 #import "ui/events/test/cocoa_test_event_utils.h"
 #include "ui/events/test/event_generator.h"
+#import "ui/gfx/mac/coordinate_conversion.h"
+#include "ui/views/controls/label.h"
 #include "ui/views/native_cursor.h"
 #include "ui/views/test/test_widget_observer.h"
 #include "ui/views/test/widget_test.h"
@@ -337,5 +341,27 @@ TEST_F(NativeWidgetMacTest, SetCursor) {
   widget->CloseNow();
 }
 
+// Tests that an accessibility request from the system makes its way through to
+// a views::Label filling the window.
+TEST_F(NativeWidgetMacTest, AccessibilityIntegration) {
+  Widget* widget = CreateTopLevelPlatformWidget();
+  gfx::Rect screen_rect(50, 50, 100, 100);
+  widget->SetBounds(screen_rect);
+
+  const base::string16 test_string = base::ASCIIToUTF16("Green");
+  views::Label* label = new views::Label(test_string);
+  label->SetBounds(0, 0, 100, 100);
+  widget->GetContentsView()->AddChildView(label);
+  widget->Show();
+
+  // Accessibility hit tests come in Cocoa screen coordinates.
+  NSRect nsrect = gfx::ScreenRectToNSRect(screen_rect);
+  NSPoint midpoint = NSMakePoint(NSMidX(nsrect), NSMidY(nsrect));
+
+  id hit = [widget->GetNativeWindow() accessibilityHitTest:midpoint];
+  id title = [hit accessibilityAttributeValue:NSAccessibilityTitleAttribute];
+  EXPECT_NSEQ(title, @"Green");
+}
+
 }  // namespace test
 }  // namespace views