Add a test case for cursor display on root window (screen share).

content/browser/media/capture/cursor_renderer_aura_unittest.cc

 // Copyright (c) 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/media/capture/cursor_renderer_aura.h"
 
 #include <stdint.h>
 
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 182 matching lines @@
 
   MoveMouseCursorWithinWindow(gfx::Point(60, 60));
   SnapshotCursorState(gfx::Rect(size));
   EXPECT_TRUE(CursorDisplayed());
 
   EXPECT_FALSE(NonZeroPixelsInRegion(frame, gfx::Rect(50, 50, 70, 70)));
   RenderCursorOnVideoFrame(frame);
   EXPECT_TRUE(NonZeroPixelsInRegion(frame, gfx::Rect(50, 50, 70, 70)));
 }
 
+TEST_F(CursorRendererAuraTest, CursorRenderedOnRootWindow) {
+  cursor_renderer_.reset(new CursorRendererAura(root_window()));
+  EXPECT_FALSE(CursorDisplayed());
+
+  // Cursor displayed after mouse movement.
+  MoveMouseCursorWithinWindow();
+  EXPECT_TRUE(CursorDisplayed());
+
+  // Cursor being displayed even if another window is activated.
+  scoped_ptr<aura::Window> window2(aura::test::CreateTestWindowWithBounds(
+      gfx::Rect(0, 0, 800, 600), root_window()));
+  wm::ActivateWindow(window2.get());
+  SnapshotCursorState(gfx::Rect(0, 0, 800, 600));
+  EXPECT_TRUE(CursorDisplayed());
+}
+
 }  // namespace content