Expose performance.memory in workers

Source/core/testing/InternalSettings.cpp

Index: Source/core/testing/InternalSettings.cpp
diff --git a/Source/core/testing/InternalSettings.cpp b/Source/core/testing/InternalSettings.cpp
index db1b00203899624e72267629bc5c8e8c7de26bfe..6b0e5ba5080705aa3e0817845664b4c710e15ebe 100644
--- a/Source/core/testing/InternalSettings.cpp
+++ b/Source/core/testing/InternalSettings.cpp
@@ -78,6 +78,7 @@ InternalSettings::Backup::Backup(Settings* settings)
     , m_originalCompositorDrivenAcceleratedScrollEnabled(settings->compositorDrivenAcceleratedScrollingEnabled())
     , m_originalLayerSquashingEnabled(settings->layerSquashingEnabled())
     , m_originalPasswordGenerationDecorationEnabled(settings->passwordGenerationDecorationEnabled())
+    , m_originalPreciseMemoryInfoEnabled(settings->preciseMemoryInfoEnabled())
 {
 }
 
@@ -103,6 +104,7 @@ void InternalSettings::Backup::restoreTo(Settings* settings)
     settings->setCompositorDrivenAcceleratedScrollingEnabled(m_originalCompositorDrivenAcceleratedScrollEnabled);
     settings->setLayerSquashingEnabled(m_originalLayerSquashingEnabled);
     settings->setPasswordGenerationDecorationEnabled(m_originalPasswordGenerationDecorationEnabled);
+    settings->setPreciseMemoryInfoEnabled(m_originalPreciseMemoryInfoEnabled);
     settings->genericFontFamilySettings().reset();
 }
 
@@ -293,6 +295,12 @@ void InternalSettings::setPictographFontFamily(const AtomicString& family, const
     settings()->notifyGenericFontFamilyChange();
 }
 
+void InternalSettings::setPreciseMemoryInfoEnabled(bool enabled, ExceptionState& exceptionState)
+{
+    InternalSettingsGuardForSettings();
+    settings()->setPreciseMemoryInfoEnabled(enabled);
+}
+
 void InternalSettings::setTextAutosizingEnabled(bool enabled, ExceptionState& exceptionState)
 {
     InternalSettingsGuardForSettings();