Disable DevToolsSanityTest.TestDeviceEmulation on Windows.

chrome/browser/devtools/devtools_sanity_browsertest.cc

Index: chrome/browser/devtools/devtools_sanity_browsertest.cc
diff --git a/chrome/browser/devtools/devtools_sanity_browsertest.cc b/chrome/browser/devtools/devtools_sanity_browsertest.cc
index 913d4d5536a8420493e24948fbfe1d2f895b7524..167ac1be1fc6587903bd0505fcadd9e13c9b5492 100644
--- a/chrome/browser/devtools/devtools_sanity_browsertest.cc
+++ b/chrome/browser/devtools/devtools_sanity_browsertest.cc
@@ -794,8 +794,13 @@ IN_PROC_BROWSER_TEST_F(DevToolsSanityTest, TestConsoleOnNavigateBack) {
   RunTest("testConsoleOnNavigateBack", kNavigateBackTestPage);
 }
 
-
-IN_PROC_BROWSER_TEST_F(DevToolsSanityTest, TestDeviceEmulation) {
+#if defined(OS_WIN)
+// http://crbug.com/397888
+#define MAYBE_TestDeviceEmulation DISABLED_TestDeviceEmulation
+#else
+#define MAYBE_TestDeviceEmulation TestDeviceEmulation
+#endif
+IN_PROC_BROWSER_TEST_F(DevToolsSanityTest, MAYBE_TestDeviceEmulation) {
   RunTest("testDeviceMetricsOverrides", "about:blank");
 }