[HTerm-Crosh] Add key shortcut for opening Crosh on ChromeOS Aura.

ash/shell_delegate.h

Index: ash/shell_delegate.h
diff --git a/ash/shell_delegate.h b/ash/shell_delegate.h
index c574cd16809e7140b8efe52a1382cab5c404819e..3c55f0f1e5fd9f382683478a4fbf734a1d13f921 100644
--- a/ash/shell_delegate.h
+++ b/ash/shell_delegate.h
@@ -12,6 +12,8 @@
 #include "base/callback.h"
 #include "base/string16.h"
 
+class GURL;
+
 namespace aura {
 class Window;
 }
@@ -77,6 +79,9 @@ class ASH_EXPORT ShellDelegate {
       CycleSource source,
       CycleOrder order) const = 0;
 
+  // Invoked to open new browser tab with URL |url|.
+  virtual void OpenNewTab(const GURL& url) = 0;
+
   // Launcher related methods --------------------------------------------------
 
   // Invoked when the user clicks on button in the launcher to create a new