bluetooth: Add a WebBluetooth command line flag.

content/shell/app/shell_main_delegate.cc

Index: content/shell/app/shell_main_delegate.cc
diff --git a/content/shell/app/shell_main_delegate.cc b/content/shell/app/shell_main_delegate.cc
index e5199f1707ef87d2dd6e405321d694e913291d06..e2dc3bf0cf308699906c9e345ca2cf9f703c245a 100644
--- a/content/shell/app/shell_main_delegate.cc
+++ b/content/shell/app/shell_main_delegate.cc
@@ -171,6 +171,7 @@ bool ShellMainDelegate::BasicStartupComplete(int* exit_code) {
     if (!command_line.HasSwitch(switches::kStableReleaseMode)) {
       command_line.AppendSwitch(
         switches::kEnableExperimentalWebPlatformFeatures);
+      command_line.AppendSwitch(switches::kEnableWebBluetooth);

[felt, 2015/05/11 13:53:03]

what's kStableReleaseMode? why do we want to automatically enable this flag
without the user flipping it?

[ortuno, 2015/05/11 17:46:43]

It's a flag to disable some web-platform runtime features so that we test
content_shell as if it were a stable release.
We are adding the flag automatically only during layout tests.

[felt, 2015/05/11 18:29:20]

ah, ok

     }
 
     if (!command_line.HasSwitch(switches::kEnableThreadedCompositing)) {