Enable global command test on Linux Aura.

chrome/browser/extensions/extension_commands_global_registry_apitest.cc

Index: chrome/browser/extensions/extension_commands_global_registry_apitest.cc
diff --git a/chrome/browser/extensions/extension_commands_global_registry_apitest.cc b/chrome/browser/extensions/extension_commands_global_registry_apitest.cc
index 85f3ac40c64f53abf0f95069858ffd97351b8a56..b9b5f6d7c77b83a684ffc192f8a59295f93ba3b4 100644
--- a/chrome/browser/extensions/extension_commands_global_registry_apitest.cc
+++ b/chrome/browser/extensions/extension_commands_global_registry_apitest.cc
@@ -10,7 +10,7 @@
 #include "content/public/test/browser_test_utils.h"
 #include "ui/base/base_window.h"
 
-#if defined(TOOLKIT_GTK)
+#if defined(OS_LINUX)
 #include <X11/Xlib.h>
 #include <X11/extensions/XTest.h>
 #include <X11/keysym.h>
@@ -23,7 +23,7 @@ namespace extensions {
 
 typedef ExtensionApiTest GlobalCommandsApiTest;
 
-#if defined(TOOLKIT_GTK)
+#if defined(OS_LINUX)
 // Send a simulated key press and release event, where |control|, |shift| or
 // |alt| indicates whether the key is struck with corresponding modifier.
 void SendNativeKeyEventToXDisplay(ui::KeyboardCode key,
@@ -64,11 +64,11 @@ void SendNativeKeyEventToXDisplay(ui::KeyboardCode key,
 
   XFlush(display);
 }
-#endif  // TOOLKIT_GTK
+#endif  // OS_LINUX
 
-#if defined(OS_WIN) || defined(TOOLKIT_GTK)
-// The feature is only fully implemented on Windows and Linux GTK+, other
-// platforms coming.
+#if defined(OS_WIN) || (defined(OS_LINUX) && !defined(OS_CHROMEOS))
+// The feature is only fully implemented on Windows and Linux, other platforms
+// coming.
 #define MAYBE_GlobalCommand GlobalCommand
 #else
 #define MAYBE_GlobalCommand DISABLED_GlobalCommand
@@ -87,7 +87,7 @@ IN_PROC_BROWSER_TEST_F(GlobalCommandsApiTest, MAYBE_GlobalCommand) {
   ASSERT_TRUE(RunExtensionTest("keybinding/global")) << message_;
   ASSERT_TRUE(catcher.GetNextResult());
 
-#if !defined(TOOLKIT_GTK)
+#if !defined(OS_LINUX)
   // Our infrastructure for sending keys expects a browser to send them to, but
   // to properly test global shortcuts you need to send them to another target.
   // So, create an incognito browser to use as a target to send the shortcuts
@@ -109,7 +109,10 @@ IN_PROC_BROWSER_TEST_F(GlobalCommandsApiTest, MAYBE_GlobalCommand) {
   ASSERT_TRUE(ui_test_utils::SendKeyPressSync(
       incognito_browser, ui::VKEY_9, true, true, false, false));
 #else
-  // On Linux GTK+, our infrastructure for sending keys just synthesize keyboard
+  // Create an incognito browser to capture the focus.
+  CreateIncognitoBrowser();
+
+  // On Linux, our infrastructure for sending keys just synthesize keyboard
   // event and send them directly to the specified window, without notifying the
   // X root window. It didn't work while testing global shortcut because the
   // stuff of global shortcut on Linux need to be notified when KeyPress event