Remove unused V8 integration code in Sky

sky/engine/bindings/core/v8/V8Initializer.cpp

-/*
- * Copyright (C) 2009 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:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
- * THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "sky/engine/config.h"
-#include "sky/engine/bindings/core/v8/V8Initializer.h"
-
-#include "bindings/core/v8/V8DOMException.h"
-#include "bindings/core/v8/V8ErrorEvent.h"
-#include "bindings/core/v8/V8Location.h"
-#include "bindings/core/v8/V8Window.h"
-#include "sky/engine/bindings/core/v8/DOMWrapperWorld.h"
-#include "sky/engine/bindings/core/v8/ScriptCallStackFactory.h"
-#include "sky/engine/bindings/core/v8/ScriptController.h"
-#include "sky/engine/bindings/core/v8/ScriptProfiler.h"
-#include "sky/engine/bindings/core/v8/V8Binding.h"
-#include "sky/engine/bindings/core/v8/V8ErrorHandler.h"
-#include "sky/engine/bindings/core/v8/V8GCController.h"
-#include "sky/engine/bindings/core/v8/V8PerContextData.h"
-#include "sky/engine/core/dom/Document.h"
-#include "sky/engine/core/dom/ExceptionCode.h"
-#include "sky/engine/core/frame/ConsoleTypes.h"
-#include "sky/engine/core/frame/LocalDOMWindow.h"
-#include "sky/engine/core/frame/LocalFrame.h"
-#include "sky/engine/platform/EventDispatchForbiddenScope.h"
-#include "sky/engine/platform/TraceEvent.h"
-#include "sky/engine/public/platform/Platform.h"
-#include "sky/engine/core/inspector/ScriptCallStack.h"
-#include "sky/engine/wtf/RefPtr.h"
-#include "sky/engine/wtf/text/WTFString.h"
-#include "v8/include/v8-debug.h"
-
-namespace blink {
-
-static LocalFrame* findFrame(v8::Local<v8::Object> host, v8::Local<v8::Value> data, v8::Isolate* isolate)
-{
-    const WrapperTypeInfo* type = WrapperTypeInfo::unwrap(data);
-
-    if (V8Window::wrapperTypeInfo.equals(type)) {
-        v8::Handle<v8::Object> windowWrapper = V8Window::findInstanceInPrototypeChain(host, isolate);
-        if (windowWrapper.IsEmpty())
-            return 0;
-        return V8Window::toNative(windowWrapper)->frame();
-    }
-
-    if (V8Location::wrapperTypeInfo.equals(type))
-        return V8Location::toNative(host)->frame();
-
-    // This function can handle only those types listed above.
-    ASSERT_NOT_REACHED();
-    return 0;
-}
-
-static void reportFatalErrorInMainThread(const char* location, const char* message)
-{
-    int memoryUsageMB = blink::Platform::current()->actualMemoryUsageMB();
-    printf("V8 error: %s (%s).  Current memory usage: %d MB\n", message, location, memoryUsageMB);
-    CRASH();
-}
-
-static LocalFrame* retrieveFrameWithGlobalObjectCheck(v8::Handle<v8::Context> context)
-{
-    if (context.IsEmpty())
-        return 0;
-
-    // FIXME: This is a temporary hack for crbug.com/345014.
-    // Currently it's possible that V8 can trigger Debugger::ProcessDebugEvent for a context
-    // that is being initialized (i.e., inside Context::New() of the context).
-    // We should fix the V8 side so that it won't trigger the event for a half-baked context
-    // because there is no way in the embedder side to check if the context is half-baked or not.
-    if (isMainThread() && DOMWrapperWorld::windowIsBeingInitialized())
-        return 0;
-
-    v8::Handle<v8::Value> global = V8Window::findInstanceInPrototypeChain(context->Global(), context->GetIsolate());
-    if (global.IsEmpty())
-        return 0;
-
-    return toFrameIfNotDetached(context);
-}
-
-static void messageHandlerInMainThread(v8::Handle<v8::Message> message, v8::Handle<v8::Value> data)
-{
-    ASSERT(isMainThread());
-    // It's possible that messageHandlerInMainThread() is invoked while we're initializing a window.
-    // In that half-baked situation, we don't have a valid context nor a valid world,
-    // so just return immediately.
-    if (DOMWrapperWorld::windowIsBeingInitialized())
-        return;
-
-    v8::Isolate* isolate = v8::Isolate::GetCurrent();
-    // Check if we're in the V8DebugContext which does not have a window object.
-    if (!retrieveFrameWithGlobalObjectCheck(isolate->GetCurrentContext())) {
-        printf("Unhandled: %s %s\n",
-            toCoreString(message->Get()).ascii().data(),
-            toCoreString(message->GetSourceLine()).ascii().data());
-        return;
-    }
-    // If called during context initialization, there will be no entered window.
-    LocalDOMWindow* enteredWindow = enteredDOMWindow(isolate);
-    if (!enteredWindow)
-        return;
-
-    String errorMessage = toCoreString(message->Get());
-
-    v8::Handle<v8::StackTrace> stackTrace = message->GetStackTrace();
-    RefPtr<ScriptCallStack> callStack = nullptr;
-    int scriptId = message->GetScriptOrigin().ScriptID()->Value();
-    // Currently stack trace is only collected when inspector is open.
-    if (!stackTrace.IsEmpty() && stackTrace->GetFrameCount() > 0) {
-        callStack = createScriptCallStack(stackTrace, ScriptCallStack::maxCallStackSizeToCapture, isolate);
-        bool success = false;
-        int topScriptId = callStack->at(0).scriptId().toInt(&success);
-        if (success && topScriptId == scriptId)
-            scriptId = 0;
-    } else {
-        Vector<ScriptCallFrame> callFrames;
-        callStack = ScriptCallStack::create(callFrames);
-    }
-
-    v8::Handle<v8::Value> resourceName = message->GetScriptOrigin().ResourceName();
-    bool shouldUseDocumentURL = resourceName.IsEmpty() || !resourceName->IsString();
-    String resource = shouldUseDocumentURL ? enteredWindow->document()->url() : toCoreString(resourceName.As<v8::String>());
-
-    ScriptState* scriptState = ScriptState::current(isolate);
-    RefPtr<ErrorEvent> event = ErrorEvent::create(errorMessage, resource, message->GetLineNumber(), message->GetStartColumn() + 1, &scriptState->world());
-    if (V8DOMWrapper::isDOMWrapper(data)) {
-        v8::Handle<v8::Object> obj = v8::Handle<v8::Object>::Cast(data);
-        const WrapperTypeInfo* type = toWrapperTypeInfo(obj);
-        if (V8DOMException::wrapperTypeInfo.isSubclass(type)) {
-            DOMException* exception = V8DOMException::toNative(obj);
-            if (exception && !exception->messageForConsole().isEmpty())
-                event->setUnsanitizedMessage("Uncaught " + exception->toStringForConsole());
-        }
-    }
-
-    // This method might be called while we're creating a new context. In this case, we
-    // avoid storing the exception object, as we can't create a wrapper during context creation.
-    // FIXME: Can we even get here during initialization now that we bail out when GetEntered returns an empty handle?
-    LocalFrame* frame = enteredWindow->document()->frame();
-    if (frame && frame->script().existingWindowProxy(scriptState->world())) {
-        V8ErrorHandler::storeExceptionOnErrorEventWrapper(event.get(), data, scriptState->context()->Global(), isolate);
-    }
-
-    enteredWindow->document()->reportException(event.release(), scriptId, callStack);
-}
-
-static void failedAccessCheckCallbackInMainThread(v8::Local<v8::Object> host, v8::AccessType type, v8::Local<v8::Value> data)
-{
-    v8::Isolate* isolate = v8::Isolate::GetCurrent();
-    LocalFrame* target = findFrame(host, data, isolate);
-    if (!target)
-        return;
-
-    // FIXME: We should modify V8 to pass in more contextual information (context, property, and object).
-    ExceptionState exceptionState(ExceptionState::UnknownContext, 0, 0, isolate->GetCurrentContext()->Global(), isolate);
-    exceptionState.throwSecurityError("failedAccessCheckCallbackInMainThread", "failedAccessCheckCallbackInMainThread");
-    exceptionState.throwIfNeeded();
-}
-
-static void timerTraceProfilerInMainThread(const char* name, int status)
-{
-    if (!status) {
-        TRACE_EVENT_BEGIN0("v8", name);
-    } else {
-        TRACE_EVENT_END0("v8", name);
-    }
-}
-
-void V8Initializer::initializeMainThreadIfNeeded()
-{
-    ASSERT(isMainThread());
-
-    static bool initialized = false;
-    if (initialized)
-        return;
-    initialized = true;
-
-    static const char v8Flags[] = "--harmony-classes --harmony-arrays --harmony-array-includes --harmony-regexps";
-    v8::V8::SetFlagsFromString(v8Flags, sizeof(v8Flags) - 1);
-
-    gin::IsolateHolder::Initialize(gin::IsolateHolder::kStrictMode, v8ArrayBufferAllocator());
-
-    v8::Isolate* isolate = V8PerIsolateData::initialize();
-
-    v8::V8::AddGCPrologueCallback(V8GCController::gcPrologue);
-    v8::V8::AddGCEpilogueCallback(V8GCController::gcEpilogue);
-
-    v8::Debug::SetLiveEditEnabled(isolate, false);
-
-    isolate->SetAutorunMicrotasks(false);
-
-    v8::V8::SetFatalErrorHandler(reportFatalErrorInMainThread);
-    v8::V8::AddMessageListener(messageHandlerInMainThread);
-    v8::V8::SetFailedAccessCheckCallbackFunction(failedAccessCheckCallbackInMainThread);
-
-    isolate->SetEventLogger(timerTraceProfilerInMainThread);
-
-    ScriptProfiler::initialize();
-}
-
-} // namespace blink