Revert 95540 - Marked OutOfProcessPPAPITest.Instance flaky.

BUG=91729
Review URL: http://codereview.chromium.org/7575021

TBR=apatrick@chromium.org

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@95548 0039d316-1c4b-4281-b951-d872f2087c98

chrome/test/ui/ppapi_uitest.cc

@@ -159,15 +159,7 @@ TEST_PPAPI_IN_PROCESS(CursorControl)
 TEST_PPAPI_OUT_OF_PROCESS(CursorControl)
 
 TEST_PPAPI_IN_PROCESS(Instance)
-
-// http://crbug.com/91729
-#if defined(OS_LINUX)
-#define MAYBE_Instance FLAKY_Instance
-#else
-#define MAYBE_Instance Instance
-#endif
-
-TEST_PPAPI_OUT_OF_PROCESS(MAYBE_Instance)
+TEST_PPAPI_OUT_OF_PROCESS(Instance)
 
 TEST_PPAPI_IN_PROCESS(Graphics2D)
 // Disabled because it times out: http://crbug.com/89961