Web MIDI: add kDumpRenderTree flag check to ShellBrowserContext::RequestMIDI...

content/shell/shell_browser_context.cc

Index: content/shell/shell_browser_context.cc
diff --git a/content/shell/shell_browser_context.cc b/content/shell/shell_browser_context.cc
index 281862fc0ede8e86907673282eb84daed6015b13..58b966c2ecd976fafb1e1b6c85e649a88b06c644 100644
--- a/content/shell/shell_browser_context.cc
+++ b/content/shell/shell_browser_context.cc
@@ -175,8 +175,13 @@ void ShellBrowserContext::RequestMIDISysExPermission(
       int render_view_id,
       const GURL& requesting_frame,
       const MIDISysExPermissionCallback& callback) {
-  // Always reject requests for testing.
+  // Always reject requests for LayoutTests for now.
   // TODO(toyoshim): Make it programmable to improve test coverage.
+  if (!CommandLine::ForCurrentProcess()->HasSwitch(switches::kDumpRenderTree)) {
+    callback.Run(false);
+    return;
+  }
+  // TODO(toyoshim): Implement. http://crbug.com/257618 .
   callback.Run(false);
 }