Implementing console command 'debug'.

Source/core/inspector/InjectedScriptSource.js

Index: Source/core/inspector/InjectedScriptSource.js
diff --git a/Source/core/inspector/InjectedScriptSource.js b/Source/core/inspector/InjectedScriptSource.js
index 34e163ec5ba633670d5ae1e0c28ad6f7f6ead969..0cffd8726f444e947f1a73c93f5c1a98ee00b2d0 100644
--- a/Source/core/inspector/InjectedScriptSource.js
+++ b/Source/core/inspector/InjectedScriptSource.js
@@ -1153,7 +1153,8 @@ function CommandLineAPI(commandLineAPIImpl, callFrame)
  */
 CommandLineAPI.members_ = [
     "$", "$$", "$x", "dir", "dirxml", "keys", "values", "profile", "profileEnd",
-    "monitorEvents", "unmonitorEvents", "inspect", "copy", "clear", "getEventListeners", "table"
+    "monitorEvents", "unmonitorEvents", "inspect", "copy", "clear", "getEventListeners",
+    "debug", "undebug", "table"
 ];
 
 /**
@@ -1310,6 +1311,16 @@ CommandLineAPIImpl.prototype = {
         return InjectedScriptHost.getEventListeners(node);
     },
 
+    debug: function(fn)
+    {
+        InjectedScriptHost.setBreakpoint(fn);
+    },
+
+    undebug: function(fn)
+    {
+        InjectedScriptHost.removeBreakpoint(fn);
+    },
+
     table: function()
     {
         inspectedWindow.console.table.apply(inspectedWindow.console, arguments);