[inspector] move changeBreakpointState from debugger-script to native

src/inspector/debugger_script_externs.js

Index: src/inspector/debugger_script_externs.js
diff --git a/src/inspector/debugger_script_externs.js b/src/inspector/debugger_script_externs.js
index 87ebe44a4bb83f027c60e202e60b2cc5f426a9c5..88a52360d23e051df41ccba6f7d32603a8f795a4 100644
--- a/src/inspector/debugger_script_externs.js
+++ b/src/inspector/debugger_script_externs.js
@@ -61,17 +61,6 @@ var JavaScriptCallFrame;
  */
 var Debug = {};
 
-Debug.setBreakOnException = function() {}
-
-Debug.clearBreakOnException = function() {}
-
-Debug.setBreakOnUncaughtException = function() {}
-
-/**
- * @return {undefined}
- */
-Debug.clearBreakOnUncaughtException = function() {}
-
 Debug.clearStepping = function() {}
 
 Debug.clearAllBreakPoints = function() {}