Use webrtc::MouseCursorMonitor for cursor shapes

remoting/host/chromoting_host_unittest.cc

Index: remoting/host/chromoting_host_unittest.cc
diff --git a/remoting/host/chromoting_host_unittest.cc b/remoting/host/chromoting_host_unittest.cc
index 1410371a9bc8b5049461e0246697020ac5377808..7e5f5993a0238a45575bbd17c44f06ccbaf553f2 100644
--- a/remoting/host/chromoting_host_unittest.cc
+++ b/remoting/host/chromoting_host_unittest.cc
@@ -245,6 +245,9 @@ class ChromotingHostTest : public testing::Test {
     EXPECT_CALL(*desktop_environment, CreateVideoCapturerPtr())
         .Times(AtMost(1))
         .WillOnce(Invoke(this, &ChromotingHostTest::CreateVideoCapturer));
+    EXPECT_CALL(*desktop_environment, CreateMouseCursorMonitorPtr())
+        .Times(AtMost(1))
+        .WillOnce(Invoke(this, &ChromotingHostTest::CreateMouseCursorMonitor));
     EXPECT_CALL(*desktop_environment, GetCapabilities())
         .Times(AtMost(1));
     EXPECT_CALL(*desktop_environment, SetCapabilities(_))
@@ -267,6 +270,12 @@ class ChromotingHostTest : public testing::Test {
     return new ScreenCapturerFake();
   }
 
+  // Creates a MockMouseCursorMonitor, to mock
+  // DesktopEnvironment::CreateMouseCursorMonitor().
+  webrtc::MouseCursorMonitor* CreateMouseCursorMonitor() {
+    return new MockMouseCursorMonitor();
+  }
+
   void DisconnectAllClients() {
     host_->DisconnectAllClients();
   }