[inspector] Initial import of v8_inspector.

src/inspector/InjectedScript.cpp

+/*
+ * Copyright (C) 2012 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
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+ * OWNER OR 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 "src/inspector/InjectedScript.h"
+
+#include "src/inspector/InjectedScriptNative.h"
+#include "src/inspector/InjectedScriptSource.h"
+#include "src/inspector/InspectedContext.h"
+#include "src/inspector/RemoteObjectId.h"
+#include "src/inspector/StringUtil.h"
+#include "src/inspector/V8Compat.h"
+#include "src/inspector/V8Console.h"
+#include "src/inspector/V8FunctionCall.h"
+#include "src/inspector/V8InjectedScriptHost.h"
+#include "src/inspector/V8InspectorImpl.h"
+#include "src/inspector/V8InspectorSessionImpl.h"
+#include "src/inspector/V8StackTraceImpl.h"
+#include "src/inspector/V8ValueCopier.h"
+#include "src/inspector/protocol/Protocol.h"
+#include "src/inspector/public/V8InspectorClient.h"
+
+namespace v8_inspector {
+
+using protocol::Array;
+using protocol::Runtime::PropertyDescriptor;
+using protocol::Runtime::InternalPropertyDescriptor;
+using protocol::Runtime::RemoteObject;
+using protocol::Maybe;
+
+static bool hasInternalError(ErrorString* errorString, bool hasError) {
+  if (hasError) *errorString = "Internal error";
+  return hasError;
+}
+
+std::unique_ptr<InjectedScript> InjectedScript::create(
+    InspectedContext* inspectedContext) {
+  v8::Isolate* isolate = inspectedContext->isolate();
+  v8::HandleScope handles(isolate);
+  v8::Local<v8::Context> context = inspectedContext->context();
+  v8::Context::Scope scope(context);
+
+  std::unique_ptr<InjectedScriptNative> injectedScriptNative(
+      new InjectedScriptNative(isolate));
+  v8::Local<v8::Object> scriptHostWrapper =
+      V8InjectedScriptHost::create(context, inspectedContext->inspector());
+  injectedScriptNative->setOnInjectedScriptHost(scriptHostWrapper);
+
+  // Inject javascript into the context. The compiled script is supposed to
+  // evaluate into
+  // a single anonymous function(it's anonymous to avoid cluttering the global
+  // object with
+  // inspector's stuff) the function is called a few lines below with
+  // InjectedScriptHost wrapper,
+  // injected script id and explicit reference to the inspected global object.
+  // The function is expected
+  // to create and configure InjectedScript instance that is going to be used by
+  // the inspector.
+  String16 injectedScriptSource(
+      reinterpret_cast<const char*>(InjectedScriptSource_js),
+      sizeof(InjectedScriptSource_js));
+  v8::Local<v8::Value> value;
+  if (!inspectedContext->inspector()
+           ->compileAndRunInternalScript(
+               context, toV8String(isolate, injectedScriptSource))
+           .ToLocal(&value))
+    return nullptr;
+  DCHECK(value->IsFunction());
+  v8::Local<v8::Function> function = v8::Local<v8::Function>::Cast(value);
+  v8::Local<v8::Object> windowGlobal = context->Global();
+  v8::Local<v8::Value> info[] = {
+      scriptHostWrapper, windowGlobal,
+      v8::Number::New(isolate, inspectedContext->contextId())};
+  v8::MicrotasksScope microtasksScope(isolate,
+                                      v8::MicrotasksScope::kDoNotRunMicrotasks);
+  v8::Local<v8::Value> injectedScriptValue;
+  if (!function
+           ->Call(context, windowGlobal, V8_INSPECTOR_ARRAY_LENGTH(info), info)
+           .ToLocal(&injectedScriptValue))
+    return nullptr;
+  if (!injectedScriptValue->IsObject()) return nullptr;
+  return wrapUnique(new InjectedScript(inspectedContext,
+                                       injectedScriptValue.As<v8::Object>(),
+                                       std::move(injectedScriptNative)));
+}
+
+InjectedScript::InjectedScript(
+    InspectedContext* context, v8::Local<v8::Object> object,
+    std::unique_ptr<InjectedScriptNative> injectedScriptNative)
+    : m_context(context),
+      m_value(context->isolate(), object),
+      m_native(std::move(injectedScriptNative)) {}
+
+InjectedScript::~InjectedScript() {}
+
+void InjectedScript::getProperties(
+    ErrorString* errorString, v8::Local<v8::Object> object,
+    const String16& groupName, bool ownProperties, bool accessorPropertiesOnly,
+    bool generatePreview,
+    std::unique_ptr<Array<PropertyDescriptor>>* properties,
+    Maybe<protocol::Runtime::ExceptionDetails>* exceptionDetails) {
+  v8::HandleScope handles(m_context->isolate());
+  V8FunctionCall function(m_context->inspector(), m_context->context(),
+                          v8Value(), "getProperties");
+  function.appendArgument(object);
+  function.appendArgument(groupName);
+  function.appendArgument(ownProperties);
+  function.appendArgument(accessorPropertiesOnly);
+  function.appendArgument(generatePreview);
+
+  v8::TryCatch tryCatch(m_context->isolate());
+  v8::Local<v8::Value> resultValue = function.callWithoutExceptionHandling();
+  if (tryCatch.HasCaught()) {
+    *exceptionDetails = createExceptionDetails(errorString, tryCatch, groupName,
+                                               generatePreview);
+    // FIXME: make properties optional
+    *properties = Array<PropertyDescriptor>::create();
+    return;
+  }
+
+  std::unique_ptr<protocol::Value> protocolValue =
+      toProtocolValue(m_context->context(), resultValue);
+  if (hasInternalError(errorString, !protocolValue)) return;
+  protocol::ErrorSupport errors(errorString);
+  std::unique_ptr<Array<PropertyDescriptor>> result =
+      Array<PropertyDescriptor>::parse(protocolValue.get(), &errors);
+  if (!hasInternalError(errorString, errors.hasErrors()))
+    *properties = std::move(result);
+}
+
+void InjectedScript::releaseObject(const String16& objectId) {
+  std::unique_ptr<protocol::Value> parsedObjectId =
+      protocol::parseJSON(objectId);
+  if (!parsedObjectId) return;
+  protocol::DictionaryValue* object =
+      protocol::DictionaryValue::cast(parsedObjectId.get());
+  if (!object) return;
+  int boundId = 0;
+  if (!object->getInteger("id", &boundId)) return;
+  m_native->unbind(boundId);
+}
+
+std::unique_ptr<protocol::Runtime::RemoteObject> InjectedScript::wrapObject(
+    ErrorString* errorString, v8::Local<v8::Value> value,
+    const String16& groupName, bool forceValueType,
+    bool generatePreview) const {
+  v8::HandleScope handles(m_context->isolate());
+  v8::Local<v8::Value> wrappedObject;
+  if (!wrapValue(errorString, value, groupName, forceValueType, generatePreview)
+           .ToLocal(&wrappedObject))
+    return nullptr;
+  protocol::ErrorSupport errors;
+  std::unique_ptr<protocol::Runtime::RemoteObject> remoteObject =
+      protocol::Runtime::RemoteObject::parse(
+          toProtocolValue(m_context->context(), wrappedObject).get(), &errors);
+  if (!remoteObject) *errorString = "Object has too long reference chain";
+  return remoteObject;
+}
+
+bool InjectedScript::wrapObjectProperty(ErrorString* errorString,
+                                        v8::Local<v8::Object> object,
+                                        v8::Local<v8::Name> key,
+                                        const String16& groupName,
+                                        bool forceValueType,
+                                        bool generatePreview) const {
+  v8::Local<v8::Value> property;
+  if (hasInternalError(
+          errorString,
+          !object->Get(m_context->context(), key).ToLocal(&property)))
+    return false;
+  v8::Local<v8::Value> wrappedProperty;
+  if (!wrapValue(errorString, property, groupName, forceValueType,
+                 generatePreview)
+           .ToLocal(&wrappedProperty))
+    return false;
+  v8::Maybe<bool> success =
+      createDataProperty(m_context->context(), object, key, wrappedProperty);
+  if (hasInternalError(errorString, success.IsNothing() || !success.FromJust()))
+    return false;
+  return true;
+}
+
+bool InjectedScript::wrapPropertyInArray(ErrorString* errorString,
+                                         v8::Local<v8::Array> array,
+                                         v8::Local<v8::String> property,
+                                         const String16& groupName,
+                                         bool forceValueType,
+                                         bool generatePreview) const {
+  V8FunctionCall function(m_context->inspector(), m_context->context(),
+                          v8Value(), "wrapPropertyInArray");
+  function.appendArgument(array);
+  function.appendArgument(property);
+  function.appendArgument(groupName);
+  function.appendArgument(forceValueType);
+  function.appendArgument(generatePreview);
+  bool hadException = false;
+  function.call(hadException);
+  return !hasInternalError(errorString, hadException);
+}
+
+bool InjectedScript::wrapObjectsInArray(ErrorString* errorString,
+                                        v8::Local<v8::Array> array,
+                                        const String16& groupName,
+                                        bool forceValueType,
+                                        bool generatePreview) const {
+  V8FunctionCall function(m_context->inspector(), m_context->context(),
+                          v8Value(), "wrapObjectsInArray");
+  function.appendArgument(array);
+  function.appendArgument(groupName);
+  function.appendArgument(forceValueType);
+  function.appendArgument(generatePreview);
+  bool hadException = false;
+  function.call(hadException);
+  return !hasInternalError(errorString, hadException);
+}
+
+v8::MaybeLocal<v8::Value> InjectedScript::wrapValue(
+    ErrorString* errorString, v8::Local<v8::Value> value,
+    const String16& groupName, bool forceValueType,
+    bool generatePreview) const {
+  V8FunctionCall function(m_context->inspector(), m_context->context(),
+                          v8Value(), "wrapObject");
+  function.appendArgument(value);
+  function.appendArgument(groupName);
+  function.appendArgument(forceValueType);
+  function.appendArgument(generatePreview);
+  bool hadException = false;
+  v8::Local<v8::Value> r = function.call(hadException);
+  if (hasInternalError(errorString, hadException || r.IsEmpty()))
+    return v8::MaybeLocal<v8::Value>();
+  return r;
+}
+
+std::unique_ptr<protocol::Runtime::RemoteObject> InjectedScript::wrapTable(
+    v8::Local<v8::Value> table, v8::Local<v8::Value> columns) const {
+  v8::HandleScope handles(m_context->isolate());
+  V8FunctionCall function(m_context->inspector(), m_context->context(),
+                          v8Value(), "wrapTable");
+  function.appendArgument(table);
+  if (columns.IsEmpty())
+    function.appendArgument(false);
+  else
+    function.appendArgument(columns);
+  bool hadException = false;
+  v8::Local<v8::Value> r = function.call(hadException);
+  if (hadException) return nullptr;
+  protocol::ErrorSupport errors;
+  return protocol::Runtime::RemoteObject::parse(
+      toProtocolValue(m_context->context(), r).get(), &errors);
+}
+
+bool InjectedScript::findObject(ErrorString* errorString,
+                                const RemoteObjectId& objectId,
+                                v8::Local<v8::Value>* outObject) const {
+  *outObject = m_native->objectForId(objectId.id());
+  if (outObject->IsEmpty())
+    *errorString = "Could not find object with given id";
+  return !outObject->IsEmpty();
+}
+
+String16 InjectedScript::objectGroupName(const RemoteObjectId& objectId) const {
+  return m_native->groupName(objectId.id());
+}
+
+void InjectedScript::releaseObjectGroup(const String16& objectGroup) {
+  m_native->releaseObjectGroup(objectGroup);
+  if (objectGroup == "console") m_lastEvaluationResult.Reset();
+}
+
+void InjectedScript::setCustomObjectFormatterEnabled(bool enabled) {
+  v8::HandleScope handles(m_context->isolate());
+  V8FunctionCall function(m_context->inspector(), m_context->context(),
+                          v8Value(), "setCustomObjectFormatterEnabled");
+  function.appendArgument(enabled);
+  bool hadException = false;
+  function.call(hadException);
+  DCHECK(!hadException);
+}
+
+v8::Local<v8::Value> InjectedScript::v8Value() const {
+  return m_value.Get(m_context->isolate());
+}
+
+v8::Local<v8::Value> InjectedScript::lastEvaluationResult() const {
+  if (m_lastEvaluationResult.IsEmpty())
+    return v8::Undefined(m_context->isolate());
+  return m_lastEvaluationResult.Get(m_context->isolate());
+}
+
+v8::MaybeLocal<v8::Value> InjectedScript::resolveCallArgument(
+    ErrorString* errorString, protocol::Runtime::CallArgument* callArgument) {
+  if (callArgument->hasObjectId()) {
+    std::unique_ptr<RemoteObjectId> remoteObjectId =
+        RemoteObjectId::parse(errorString, callArgument->getObjectId(""));
+    if (!remoteObjectId) return v8::MaybeLocal<v8::Value>();
+    if (remoteObjectId->contextId() != m_context->contextId()) {
+      *errorString =
+          "Argument should belong to the same JavaScript world as target "
+          "object";
+      return v8::MaybeLocal<v8::Value>();
+    }
+    v8::Local<v8::Value> object;
+    if (!findObject(errorString, *remoteObjectId, &object))
+      return v8::MaybeLocal<v8::Value>();
+    return object;
+  }
+  if (callArgument->hasValue() || callArgument->hasUnserializableValue()) {
+    String16 value =
+        callArgument->hasValue()
+            ? callArgument->getValue(nullptr)->toJSONString()
+            : "Number(\"" + callArgument->getUnserializableValue("") + "\")";
+    v8::Local<v8::Value> object;
+    if (!m_context->inspector()
+             ->compileAndRunInternalScript(
+                 m_context->context(), toV8String(m_context->isolate(), value))
+             .ToLocal(&object)) {
+      *errorString = "Couldn't parse value object in call argument";
+      return v8::MaybeLocal<v8::Value>();
+    }
+    return object;
+  }
+  return v8::Undefined(m_context->isolate());
+}
+
+std::unique_ptr<protocol::Runtime::ExceptionDetails>
+InjectedScript::createExceptionDetails(ErrorString* errorString,
+                                       const v8::TryCatch& tryCatch,
+                                       const String16& objectGroup,
+                                       bool generatePreview) {
+  if (!tryCatch.HasCaught()) return nullptr;
+  v8::Local<v8::Message> message = tryCatch.Message();
+  v8::Local<v8::Value> exception = tryCatch.Exception();
+  String16 messageText =
+      message.IsEmpty() ? String16() : toProtocolString(message->Get());
+  std::unique_ptr<protocol::Runtime::ExceptionDetails> exceptionDetails =
+      protocol::Runtime::ExceptionDetails::create()
+          .setExceptionId(m_context->inspector()->nextExceptionId())
+          .setText(exception.IsEmpty() ? messageText : String16("Uncaught"))
+          .setLineNumber(
+              message.IsEmpty()
+                  ? 0
+                  : message->GetLineNumber(m_context->context()).FromMaybe(1) -
+                        1)
+          .setColumnNumber(
+              message.IsEmpty()
+                  ? 0
+                  : message->GetStartColumn(m_context->context()).FromMaybe(0))
+          .build();
+  if (!message.IsEmpty()) {
+    exceptionDetails->setScriptId(
+        String16::fromInteger(message->GetScriptOrigin().ScriptID()->Value()));
+    v8::Local<v8::StackTrace> stackTrace = message->GetStackTrace();
+    if (!stackTrace.IsEmpty() && stackTrace->GetFrameCount() > 0)
+      exceptionDetails->setStackTrace(m_context->inspector()
+                                          ->debugger()
+                                          ->createStackTrace(stackTrace)
+                                          ->buildInspectorObjectImpl());
+  }
+  if (!exception.IsEmpty()) {
+    std::unique_ptr<protocol::Runtime::RemoteObject> wrapped = wrapObject(
+        errorString, exception, objectGroup, false /* forceValueType */,
+        generatePreview && !exception->IsNativeError());
+    if (!wrapped) return nullptr;
+    exceptionDetails->setException(std::move(wrapped));
+  }
+  return exceptionDetails;
+}
+
+void InjectedScript::wrapEvaluateResult(
+    ErrorString* errorString, v8::MaybeLocal<v8::Value> maybeResultValue,
+    const v8::TryCatch& tryCatch, const String16& objectGroup,
+    bool returnByValue, bool generatePreview,
+    std::unique_ptr<protocol::Runtime::RemoteObject>* result,
+    Maybe<protocol::Runtime::ExceptionDetails>* exceptionDetails) {
+  v8::Local<v8::Value> resultValue;
+  if (!tryCatch.HasCaught()) {
+    if (hasInternalError(errorString, !maybeResultValue.ToLocal(&resultValue)))
+      return;
+    std::unique_ptr<RemoteObject> remoteObject = wrapObject(
+        errorString, resultValue, objectGroup, returnByValue, generatePreview);
+    if (!remoteObject) return;
+    if (objectGroup == "console")
+      m_lastEvaluationResult.Reset(m_context->isolate(), resultValue);
+    *result = std::move(remoteObject);
+  } else {
+    v8::Local<v8::Value> exception = tryCatch.Exception();
+    std::unique_ptr<RemoteObject> remoteObject =
+        wrapObject(errorString, exception, objectGroup, false,
+                   generatePreview && !exception->IsNativeError());
+    if (!remoteObject) return;
+    // We send exception in result for compatibility reasons, even though it's
+    // accessible through exceptionDetails.exception.
+    *result = std::move(remoteObject);
+    *exceptionDetails = createExceptionDetails(errorString, tryCatch,
+                                               objectGroup, generatePreview);
+  }
+}
+
+v8::Local<v8::Object> InjectedScript::commandLineAPI() {
+  if (m_commandLineAPI.IsEmpty())
+    m_commandLineAPI.Reset(m_context->isolate(),
+                           V8Console::createCommandLineAPI(m_context));
+  return m_commandLineAPI.Get(m_context->isolate());
+}
+
+InjectedScript::Scope::Scope(ErrorString* errorString,
+                             V8InspectorImpl* inspector, int contextGroupId)
+    : m_errorString(errorString),
+      m_inspector(inspector),
+      m_contextGroupId(contextGroupId),
+      m_injectedScript(nullptr),
+      m_handleScope(inspector->isolate()),
+      m_tryCatch(inspector->isolate()),
+      m_ignoreExceptionsAndMuteConsole(false),
+      m_previousPauseOnExceptionsState(V8Debugger::DontPauseOnExceptions),
+      m_userGesture(false) {}
+
+bool InjectedScript::Scope::initialize() {
+  cleanup();
+  // TODO(dgozman): what if we reattach to the same context group during
+  // evaluate? Introduce a session id?
+  V8InspectorSessionImpl* session =
+      m_inspector->sessionForContextGroup(m_contextGroupId);
+  if (!session) {
+    *m_errorString = "Internal error";
+    return false;
+  }
+  findInjectedScript(session);
+  if (!m_injectedScript) return false;
+  m_context = m_injectedScript->context()->context();
+  m_context->Enter();
+  return true;
+}
+
+bool InjectedScript::Scope::installCommandLineAPI() {
+  DCHECK(m_injectedScript && !m_context.IsEmpty() &&
+         !m_commandLineAPIScope.get());
+  m_commandLineAPIScope.reset(new V8Console::CommandLineAPIScope(
+      m_context, m_injectedScript->commandLineAPI(), m_context->Global()));
+  return true;
+}
+
+void InjectedScript::Scope::ignoreExceptionsAndMuteConsole() {
+  DCHECK(!m_ignoreExceptionsAndMuteConsole);
+  m_ignoreExceptionsAndMuteConsole = true;
+  m_inspector->client()->muteMetrics(m_contextGroupId);
+  m_inspector->muteExceptions(m_contextGroupId);
+  m_previousPauseOnExceptionsState =
+      setPauseOnExceptionsState(V8Debugger::DontPauseOnExceptions);
+}
+
+V8Debugger::PauseOnExceptionsState
+InjectedScript::Scope::setPauseOnExceptionsState(
+    V8Debugger::PauseOnExceptionsState newState) {
+  if (!m_inspector->debugger()->enabled()) return newState;
+  V8Debugger::PauseOnExceptionsState presentState =
+      m_inspector->debugger()->getPauseOnExceptionsState();
+  if (presentState != newState)
+    m_inspector->debugger()->setPauseOnExceptionsState(newState);
+  return presentState;
+}
+
+void InjectedScript::Scope::pretendUserGesture() {
+  DCHECK(!m_userGesture);
+  m_userGesture = true;
+  m_inspector->client()->beginUserGesture();
+}
+
+void InjectedScript::Scope::cleanup() {
+  m_commandLineAPIScope.reset();
+  if (!m_context.IsEmpty()) {
+    m_context->Exit();
+    m_context.Clear();
+  }
+}
+
+InjectedScript::Scope::~Scope() {
+  if (m_ignoreExceptionsAndMuteConsole) {
+    setPauseOnExceptionsState(m_previousPauseOnExceptionsState);
+    m_inspector->client()->unmuteMetrics(m_contextGroupId);
+    m_inspector->unmuteExceptions(m_contextGroupId);
+  }
+  if (m_userGesture) m_inspector->client()->endUserGesture();
+  cleanup();
+}
+
+InjectedScript::ContextScope::ContextScope(ErrorString* errorString,
+                                           V8InspectorImpl* inspector,
+                                           int contextGroupId,
+                                           int executionContextId)
+    : InjectedScript::Scope(errorString, inspector, contextGroupId),
+      m_executionContextId(executionContextId) {}
+
+InjectedScript::ContextScope::~ContextScope() {}
+
+void InjectedScript::ContextScope::findInjectedScript(
+    V8InspectorSessionImpl* session) {
+  m_injectedScript =
+      session->findInjectedScript(m_errorString, m_executionContextId);
+}
+
+InjectedScript::ObjectScope::ObjectScope(ErrorString* errorString,
+                                         V8InspectorImpl* inspector,
+                                         int contextGroupId,
+                                         const String16& remoteObjectId)
+    : InjectedScript::Scope(errorString, inspector, contextGroupId),
+      m_remoteObjectId(remoteObjectId) {}
+
+InjectedScript::ObjectScope::~ObjectScope() {}
+
+void InjectedScript::ObjectScope::findInjectedScript(
+    V8InspectorSessionImpl* session) {
+  std::unique_ptr<RemoteObjectId> remoteId =
+      RemoteObjectId::parse(m_errorString, m_remoteObjectId);
+  if (!remoteId) return;
+  InjectedScript* injectedScript =
+      session->findInjectedScript(m_errorString, remoteId.get());
+  if (!injectedScript) return;
+  m_objectGroupName = injectedScript->objectGroupName(*remoteId);
+  if (!injectedScript->findObject(m_errorString, *remoteId, &m_object)) return;
+  m_injectedScript = injectedScript;
+}
+
+InjectedScript::CallFrameScope::CallFrameScope(ErrorString* errorString,
+                                               V8InspectorImpl* inspector,
+                                               int contextGroupId,
+                                               const String16& remoteObjectId)
+    : InjectedScript::Scope(errorString, inspector, contextGroupId),
+      m_remoteCallFrameId(remoteObjectId) {}
+
+InjectedScript::CallFrameScope::~CallFrameScope() {}
+
+void InjectedScript::CallFrameScope::findInjectedScript(
+    V8InspectorSessionImpl* session) {
+  std::unique_ptr<RemoteCallFrameId> remoteId =
+      RemoteCallFrameId::parse(m_errorString, m_remoteCallFrameId);
+  if (!remoteId) return;
+  m_frameOrdinal = static_cast<size_t>(remoteId->frameOrdinal());
+  m_injectedScript = session->findInjectedScript(m_errorString, remoteId.get());
+}
+
+}  // namespace v8_inspector