Disable all the tests that are flaking more than 5% on Linux builders.

chrome/test/ppapi/ppapi_browsertest.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/ppapi/ppapi_test.h"
 
 #include "base/test/test_timeouts.h"
 #include "build/build_config.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 1049 matching lines @@
   RunTestViaHTTP( \
       LIST_TEST(Audio_Creation) \
       LIST_TEST(Audio_DestroyNoStop) \
       LIST_TEST(Audio_Failures) \
       LIST_TEST(Audio_AudioCallback1) \
       LIST_TEST(Audio_AudioCallback2) \
       LIST_TEST(Audio_AudioCallback3) \
       LIST_TEST(Audio_AudioCallback4) \
   )
 
+#if defined(OS_LINUX)
+// http://crbug.com/396464
+#define MAYBE_Audio DISABLED_Audio
+#else
+#define MAYBE_Audio Audio
+#endif
 // PPB_Audio is not supported in-process.
-IN_PROC_BROWSER_TEST_F(OutOfProcessPPAPITest, Audio) {
+IN_PROC_BROWSER_TEST_F(OutOfProcessPPAPITest, MAYBE_Audio) {
   RUN_AUDIO_SUBTESTS;
 }
 IN_PROC_BROWSER_TEST_F(PPAPINaClNewlibTest, Audio) {
   RUN_AUDIO_SUBTESTS;
 }
 IN_PROC_BROWSER_TEST_F(PPAPINaClGLibcTest, MAYBE_GLIBC(Audio)) {
   RUN_AUDIO_SUBTESTS;
 }
 IN_PROC_BROWSER_TEST_F(PPAPINaClPNaClTest, Audio) {
   RUN_AUDIO_SUBTESTS;
@@ skipping 158 matching lines @@
 // This test fails with the test compositor which is what's used by default for
 // browser tests on Windows. Renable when the software compositor is available.
 #define MAYBE_Compositor0 DISABLED_Compositor0
 #define MAYBE_Compositor1 DISABLED_Compositor1
 #elif defined(OS_MACOSX)
 // This test fails when using the legacy software mode. Reenable when the
 // software compositor is enabled crbug.com/286038
 #define MAYBE_Compositor0 DISABLED_Compositor0
 #define MAYBE_Compositor1 DISABLED_Compositor1
 #else
-#define MAYBE_Compositor0 Compositor0
-#define MAYBE_Compositor1 Compositor1
+// flaky on Linux: http://crbug.com/396482
+#define MAYBE_Compositor0 DISABLED_Compositor0
+#define MAYBE_Compositor1 DISABLED_Compositor1
 #endif
 
 TEST_PPAPI_NACL_SUBTESTS(MAYBE_Compositor0, RUN_COMPOSITOR_SUBTESTS_0)
 TEST_PPAPI_NACL_SUBTESTS(MAYBE_Compositor1, RUN_COMPOSITOR_SUBTESTS_1)
 
 TEST_PPAPI_NACL(MediaStreamAudioTrack)
 
 TEST_PPAPI_NACL(MediaStreamVideoTrack)
 
 TEST_PPAPI_NACL(MouseCursor)
@@ skipping 60 matching lines @@
           LIST_TEST(FlashDRM_GetHmonitor)
           LIST_TEST(FlashDRM_GetVoucherFile));
 }
 
 TEST_PPAPI_IN_PROCESS(TalkPrivate)
 TEST_PPAPI_OUT_OF_PROCESS(TalkPrivate)
 
 #if defined(OS_CHROMEOS)
 TEST_PPAPI_OUT_OF_PROCESS(OutputProtectionPrivate)
 #endif