Disable flaky SpeechRecognitionBrowsertest.Precheck on all platforms.

content/browser/speech/speech_recognition_browsertest.cc

Index: content/browser/speech/speech_recognition_browsertest.cc
diff --git a/content/browser/speech/speech_recognition_browsertest.cc b/content/browser/speech/speech_recognition_browsertest.cc
index 02671a4786fcb7a98aeb4509a0e5fb31651a5c5b..62b22ad23d9472e1f2af42ca1019d341bd5a12ce 100644
--- a/content/browser/speech/speech_recognition_browsertest.cc
+++ b/content/browser/speech/speech_recognition_browsertest.cc
@@ -188,13 +188,8 @@ class SpeechRecognitionBrowserTest :
 
 // Simply loads the test page and checks if it was able to create a Speech
 // Recognition object in JavaScript, to make sure the Web Speech API is enabled.
-// http://crbug.com/396414
-#if defined(OS_WIN) || defined(OS_MACOSX)
-#define MAYBE_Precheck DISABLED_Precheck
-#else
-#define MAYBE_Precheck Precheck
-#endif
-IN_PROC_BROWSER_TEST_F(SpeechRecognitionBrowserTest, MAYBE_Precheck) {
+// Flaky on all platforms. http://crbug.com/396414.
+IN_PROC_BROWSER_TEST_F(SpeechRecognitionBrowserTest, DISABLED_Precheck) {
   NavigateToURLBlockUntilNavigationsComplete(
       shell(), GetTestUrlFromFragment("precheck"), 2);