Add support for transparent background API

chrome/browser/extensions/api/app_window/app_window_apitest.cc

Index: chrome/browser/extensions/api/app_window/app_window_apitest.cc
diff --git a/chrome/browser/extensions/api/app_window/app_window_apitest.cc b/chrome/browser/extensions/api/app_window/app_window_apitest.cc
index 2420628ad7a3ddee05b023b3ca3da34554dea3d7..12a9f3e41d11f815828d28d2ba3f04f6cf3a8cb1 100644
--- a/chrome/browser/extensions/api/app_window/app_window_apitest.cc
+++ b/chrome/browser/extensions/api/app_window/app_window_apitest.cc
@@ -110,4 +110,34 @@ IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest, WindowsApiGet) {
       << message_;
 }
 
+IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest,
+                       WindowsApiAlphaEnabledHasPermissions) {
+#if defined(USE_ASH)

[benwells, 2014/08/05 23:37:05]

Should this be USE_AURA?

[garykac, 2014/08/07 03:54:00]

Yes, but it needs to exclude Linux while keeping CrOS.

At one point in the past it seemed like ASH would do what I wanted here, but it
doesn't quite so I'm working on the correct #def magic here.

+  EXPECT_TRUE(RunPlatformAppTest(
+      "platform_apps/windows_api_alpha_enabled/has_permissions_has_alpha"))
+      << message_;
+#else
+  EXPECT_TRUE(RunPlatformAppTest(
+      "platform_apps/windows_api_alpha_enabled/has_permissions_no_alpha"))
+      << message_;
+#endif
+}
+
+IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest,
+                       WindowsApiAlphaEnabledNoPermissions) {
+  EXPECT_TRUE(RunPlatformAppTest(
+      "platform_apps/windows_api_alpha_enabled/no_permissions"))
+      << message_;
+}
+
+IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest, WindowsApiAlphaEnabledInStable) {
+  extensions::ScopedCurrentChannel channel(chrome::VersionInfo::CHANNEL_STABLE);
+  EXPECT_TRUE(RunPlatformAppTestWithFlags(
+      "platform_apps/windows_api_alpha_enabled/in_stable",
+      // Ignore manifest warnings because the extension will not load at all
+      // in stable.
+      kFlagIgnoreManifestWarnings))
+      << message_;
+}
+
 }  // namespace extensions