[inspector] migrated Debugger.setBreakpointsActive 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 e4d8141a975c9d2fb1ac4faca3235f6af5f5ad35..6f36fb9c41ecc28234943c7f59c2f485e7196277 100644
--- a/src/inspector/debugger_script_externs.js
+++ b/src/inspector/debugger_script_externs.js
@@ -72,10 +72,6 @@ Debug.findBreakPointActualLocations = function(breakId) {}
  */
 Debug.findBreakPoint = function(breakId, remove) {}
 
-/** @return {!DebuggerFlags} */
-Debug.debuggerFlags = function() {}
-
-
 /** @enum */
 const BreakPositionAlignment = {
     Statement: 0,
@@ -83,20 +79,6 @@ const BreakPositionAlignment = {
 };
 Debug.BreakPositionAlignment = BreakPositionAlignment;
 
-
-/** @interface */
-function DebuggerFlag() {}
-
-/** @param {boolean} value */
-DebuggerFlag.prototype.setValue = function(value) {}
-
-
-/** @typedef {{
- *    breakPointsActive: !DebuggerFlag
- *  }}
- */
-var DebuggerFlags;
-
 /** @const */
 var LiveEdit = {}