Add use-content-size switch.

atom/common/options_switches.cc

@@ -36,6 +36,9 @@ const char kNodeIntegration[] = "node-integration";
 // Enable the NSView to accept first mouse event.
 const char kAcceptFirstMouse[] = "accept-first-mouse";
 
+// Whether window size should include window frame.
+const char kUseContentSize[] = "use-content-size";
+
 }  // namespace switches
 
 }  // namespace atom

atom/common/options_switches.h

@@ -28,6 +28,7 @@ extern const char kKiosk[];
 extern const char kAlwaysOnTop[];
 extern const char kNodeIntegration[];
 extern const char kAcceptFirstMouse[];
+extern const char kUseContentSize[];
 
 }  // namespace switches