Issue 358: Can't open a new tab by middle-clicking home button...

chrome/views/controls/button/custom_button.h

Index: chrome/views/controls/button/custom_button.h
===================================================================
--- chrome/views/controls/button/custom_button.h	(revision 12354)
+++ chrome/views/controls/button/custom_button.h	(working copy)
@@ -43,6 +43,14 @@
   virtual bool IsEnabled() const;
   virtual bool IsFocusable() const;
 
+  void set_triggerable_event_flags(int triggerable_event_flags) {
+    triggerable_event_flags_ = triggerable_event_flags;
+  }
+
+  int triggerable_event_flags() const {
+    return triggerable_event_flags_;
+  }
+
  protected:
   // Construct the Button with a Listener. See comment for Button's ctor.
   explicit CustomButton(ButtonListener* listener);
@@ -86,6 +94,9 @@
   // throbbing.
   bool animate_on_state_change_;
 
+  // Mouse event flags which can trigger button actions.
+  int triggerable_event_flags_;
+
   DISALLOW_COPY_AND_ASSIGN(CustomButton);
 };