Enable the DesktopAuraTopLevelOwnedPopupResizeTest test for Linux AURA.

Added implementation for the DesktopRootWindowHostX11::SetSize function.

BUG=330596
R=erg@chromium.org, sky@chromium.org

Review URL: https://codereview.chromium.org/127453002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243740 0039d316-1c4b-4281-b951-d872f2087c98

ui/views/widget/desktop_aura/desktop_root_window_host_x11.cc

@@ -356,8 +356,10 @@ bool DesktopWindowTreeHostX11::IsVisible() const {
 }
 
 void DesktopWindowTreeHostX11::SetSize(const gfx::Size& size) {
-  // TODO(erg):
-  NOTIMPLEMENTED();
+  bool size_changed = bounds_.size() != size;
+  XResizeWindow(xdisplay_, xwindow_, size.width(), size.height());
+  if (size_changed)
+    NotifyHostResized(size);
 }
 
 void DesktopWindowTreeHostX11::StackAtTop() {

ui/views/widget/widget_unittest.cc

@@ -1218,10 +1218,6 @@ TEST_F(WidgetTest, DesktopAuraTopLevelOwnedPopupTest) {
   RunPendingMessages();
 }
 
-#if defined(OS_WIN)
-// TODO(ananta)
-// Fix this test to work on Linux Aura. Need to implement the
-// views::DesktopWindowTreeHostX11::SetSize function
 // This test validates that when a top level owned popup Aura window is
 // resized, the widget is resized as well.
 TEST_F(WidgetTest, DesktopAuraTopLevelOwnedPopupResizeTest) {
@@ -1239,7 +1235,6 @@ TEST_F(WidgetTest, DesktopAuraTopLevelOwnedPopupResizeTest) {
   ASSERT_NO_FATAL_FAILURE(popup_window.DestroyOwnedWindow());
   RunPendingMessages();
 }
-#endif
 
 // Test to ensure that the aura Window's visiblity state is set to visible if
 // the underlying widget is hidden and then shown.