Mark inspector-protocol/input/emulateTouchFromMouseEvent.html as slow

BUG=402805
TBR=pfeldman@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/464783002

git-svn-id: svn://svn.chromium.org/blink/trunk@180047 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/LayoutTests/SlowTests

@@ -97,6 +97,7 @@ crbug.com/327078 http/tests/inspector/network/long-script-content.html [ Slow ]
 crbug.com/247466 [ Debug ] inspector-enabled/sources/debugger/script-formatter-breakpoints-1.html [ Slow ]
 crbug.com/247466 [ Debug ] inspector-enabled/sources/debugger/script-formatter-breakpoints-4.html [ Slow ]
 crbug.com/394210 [ Release ] inspector/profiler/webgl/webgl-profiler-api-changes.html [ Slow ]
+crbug.com/402805 inspector-protocol/input/emulateTouchFromMouseEvent.html [ Slow ]
 # inspector tests below are slow on LinuxASAN
 crbug.com/247466 [ Linux Release ] inspector/sources/debugger/debugger-activation-crash2.html [ Slow ]