Bug 1778510: Add a ShouldRFP boolean to Worklets r=asuth

This will be needed when we set the Javascript Realm options
for Worklets.

Depends on D151283

Differential Revision: https://phabricator.services.mozilla.com/D151297

dom/worklet/WorkletGlobalScope.cpp

@@ -72,6 +72,10 @@ bool WorkletGlobalScope::IsSharedMemoryAllowed() const {
   return mImpl->IsSharedMemoryAllowed();
 }
 
+bool WorkletGlobalScope::ShouldResistFingerprinting() const {
+  return mImpl->ShouldResistFingerprinting();
+}
+
 void WorkletGlobalScope::Dump(const Optional<nsAString>& aString) const {
   WorkletThread::AssertIsOnWorkletThread();
 

dom/worklet/WorkletGlobalScope.h

@@ -68,6 +68,7 @@ class WorkletGlobalScope : public nsIGlobalObject, public nsWrapperCache {
   OriginTrials Trials() const override;
   Maybe<nsID> GetAgentClusterId() const override;
   bool IsSharedMemoryAllowed() const override;
+  bool ShouldResistFingerprinting() const override;
 
  protected:
   ~WorkletGlobalScope();

dom/worklet/WorkletImpl.cpp

@@ -52,6 +52,9 @@ WorkletImpl::WorkletImpl(nsPIDOMWindowInner* aWindow, nsIPrincipal* aPrincipal)
 
   mSharedMemoryAllowed =
       nsGlobalWindowInner::Cast(aWindow)->IsSharedMemoryAllowed();
+
+  mShouldResistFingerprinting =
+      aWindow->AsGlobal()->ShouldResistFingerprinting();
 }
 
 WorkletImpl::~WorkletImpl() {

dom/worklet/WorkletImpl.h

@@ -82,6 +82,9 @@ class WorkletImpl {
   const Maybe<nsID>& GetAgentClusterId() const { return mAgentClusterId; }
 
   bool IsSharedMemoryAllowed() const { return mSharedMemoryAllowed; }
+  bool ShouldResistFingerprinting() const {
+    return mShouldResistFingerprinting;
+  }
 
   virtual void OnAddModuleStarted() const {
     MOZ_ASSERT(NS_IsMainThread());
@@ -117,6 +120,7 @@ class WorkletImpl {
   Maybe<nsID> mAgentClusterId;
 
   bool mSharedMemoryAllowed;
+  bool mShouldResistFingerprinting;
 
   const OriginTrials mTrials;
 };