X11: Add TestDesktopScreenX11 to simulate mouse movement in ui tests

chrome/test/base/in_process_browser_test.cc

 // Copyright (c) 2012 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 "chrome/test/base/in_process_browser_test.h"
 
 #include "ash/common/ash_switches.h"
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 68 matching lines @@
 #endif
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/input_method/input_method_configuration.h"
 #endif
 
 #if defined(USE_ASH)
 #include "chrome/test/base/default_ash_event_generator_delegate.h"
 #endif
 
+#if !defined(OS_CHROMEOS) && defined(OS_LINUX)
+#include "ui/views/test/test_desktop_screen_x11.h"
+#endif
+
 namespace {
 
 // Passed as value of kTestType.
 const char kBrowserTestType[] = "browser";
 
 }  // namespace
 
 // static
 InProcessBrowserTest::SetUpBrowserFunction*
     InProcessBrowserTest::global_browser_set_up_function_ = nullptr;
@@ skipping 116 matching lines @@
   base::FilePath log_dir = logging::GetSessionLogFile(*command_line).DirName();
   base::CreateDirectory(log_dir);
   // Disable IME extension loading to avoid many browser tests failures.
   chromeos::input_method::DisableExtensionLoading();
   if (!command_line->HasSwitch(ash::switches::kAshHostWindowBounds)) {
     // Adjusting window location & size so that the ash desktop window fits
     // inside the Xvfb'x defualt resolution.
     command_line->AppendSwitchASCII(ash::switches::kAshHostWindowBounds,
                                     "0+0-1280x800");
   }
-#endif  // defined(OS_CHROMEOS)
+#elif defined(OS_LINUX)
+  DCHECK(!display::Screen::GetScreen());
+  display::Screen::SetScreenInstance(
+      views::test::TestDesktopScreenX11::GetInstance());
+#endif
 
   // Always use a mocked password storage if OS encryption is used (which is
   // when anything sensitive gets stored, including Cookies). Without this on
   // Mac, many tests will hang waiting for a user to approve KeyChain access.
   OSCryptMocker::SetUpWithSingleton();
 
 #if defined(ENABLE_CAPTIVE_PORTAL_DETECTION)
   CaptivePortalService::set_state_for_testing(
       CaptivePortalService::DISABLED_FOR_TESTING);
 #endif
@@ skipping 362 matching lines @@
   // On the Mac, this eventually reaches
   // -[BrowserWindowController windowWillClose:], which will post a deferred
   // -autorelease on itself to ultimately destroy the Browser object. The line
   // below is necessary to pump these pending messages to ensure all Browsers
   // get deleted.
   content::RunAllPendingInMessageLoop();
   delete autorelease_pool_;
   autorelease_pool_ = NULL;
 #endif
 }