[DevTools] Move canExecuteScript to V8DebuggerClient.

third_party/WebKit/Source/core/inspector/MainThreadDebugger.cpp

 /*
  * Copyright (c) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 244 matching lines @@
     LocalFrame* frame = WeakIdentifierMap<LocalFrame>::lookup(contextGroupId);
     frame->settings()->setForceMainWorldInitialization(true);
 }
 
 void MainThreadDebugger::endEnsureAllContextsInGroup(int contextGroupId)
 {
     LocalFrame* frame = WeakIdentifierMap<LocalFrame>::lookup(contextGroupId);
     frame->settings()->setForceMainWorldInitialization(false);
 }
 
+bool MainThreadDebugger::canExecuteScripts(int contextGroupId)
+{
+    LocalFrame* frame = WeakIdentifierMap<LocalFrame>::lookup(contextGroupId);

[kozy, 2016/08/01 18:08:03]

Could it return nullptr?

[dgozman, 2016/08/01 18:43:04]

Nope. If it does, we crash. That's expected.

+    return frame->script().canExecuteScripts(NotAboutToExecuteScript);
+}
+
 void MainThreadDebugger::consoleAPIMessage(int contextGroupId, V8ConsoleAPIType type, const String16& message, const String16& url, unsigned lineNumber, unsigned columnNumber, V8StackTrace* stackTrace)
 {
     LocalFrame* frame = WeakIdentifierMap<LocalFrame>::lookup(contextGroupId);
     if (!frame)
         return;
     if (type == V8ConsoleAPIType::kClear && frame->host())
         frame->host()->consoleMessageStorage().clear();
     // TODO(dgozman): do not wrap in ConsoleMessage.
     ConsoleMessage* consoleMessage = ConsoleMessage::create(ConsoleAPIMessageSource, consoleAPITypeToMessageLevel(type), message, SourceLocation::create(url, lineNumber, columnNumber, stackTrace ? stackTrace->clone() : nullptr, 0));
     frame->console().reportMessageToClient(consoleMessage);
@@ skipping 104 matching lines @@
                 return;
             if (!nodes->Set(context, index++, toV8(node, info.Holder(), info.GetIsolate())).FromMaybe(false))
                 return;
         }
         info.GetReturnValue().Set(nodes);
     }
     exceptionState.throwIfNeeded();
 }
 
 } // namespace blink