Fix DevTools support of worklets

third_party/WebKit/Source/bindings/core/v8/BindingSecurity.cpp

Index: third_party/WebKit/Source/bindings/core/v8/BindingSecurity.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/BindingSecurity.cpp b/third_party/WebKit/Source/bindings/core/v8/BindingSecurity.cpp
index 8d4873af01c1476e750837de65dcbba650261e6a..4f0e581665f1f7fa7cf7ef67af3fba6224c344cc 100644
--- a/third_party/WebKit/Source/bindings/core/v8/BindingSecurity.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/BindingSecurity.cpp
@@ -131,13 +131,21 @@ bool BindingSecurity::shouldAllowAccessTo(v8::Isolate* isolate, const LocalDOMWi
     return canAccessFrame(isolate, accessingWindow, frame->securityContext()->getSecurityOrigin(), frame->domWindow(), reportingOption);
 }
 
-bool BindingSecurity::shouldAllowAccessTo(v8::Isolate* isolate, const LocalDOMWindow* accessingWindow, const MainThreadWorkletGlobalScope* target, SecurityReportingOption reportingOption)
+bool BindingSecurity::shouldAllowAccessTo(v8::Isolate* isolate, const v8::Local<v8::Context>& calling, const ExecutionContext* callingExecutionContext, const MainThreadWorkletGlobalScope* workletGlobalScope, SecurityReportingOption reportingOption)
 {
-    ASSERT(target);
-    const Frame* frame = target->frame();
-    if (!frame || !frame->securityContext())
+    DCHECK(callingExecutionContext);
+    DOMWindow* callingDomWindow = toDOMWindow(calling);
+    if (callingExecutionContext->isMainThreadWorkletGlobalScope()) {
+        Frame* callingFrame = toMainThreadWorkletGlobalScope(callingExecutionContext)->frame();
+        callingDomWindow = callingFrame ? callingFrame->domWindow() : nullptr;
+    }
+
+    DCHECK(workletGlobalScope);
+    const Frame* workletGlobalScopeFrame = workletGlobalScope->frame();
+    if (!workletGlobalScopeFrame || !workletGlobalScopeFrame->securityContext())
         return false;
-    return canAccessFrame(isolate, accessingWindow, frame->securityContext()->getSecurityOrigin(), frame->domWindow(), reportingOption);
+
+    return canAccessFrame(isolate, toLocalDOMWindow(callingDomWindow), workletGlobalScopeFrame->securityContext()->getSecurityOrigin(), workletGlobalScopeFrame->domWindow(), reportingOption);
 }
 
 bool BindingSecurity::shouldAllowAccessTo(v8::Isolate* isolate, const LocalDOMWindow* accessingWindow, const Node* target, ExceptionState& exceptionState)
@@ -161,4 +169,28 @@ bool BindingSecurity::shouldAllowAccessToFrame(v8::Isolate* isolate, const Local
     return canAccessFrame(isolate, accessingWindow, target->securityContext()->getSecurityOrigin(), target->domWindow(), reportingOption);
 }
 
+bool BindingSecurity::callingContextCanAccessContext(v8::Isolate* isolate, const v8::Local<v8::Context>& calling, const v8::Local<v8::Context>& target, SecurityReportingOption reportingOption)
+{
+    ExecutionContext* targetExecutionContext = toExecutionContext(target);
+    DCHECK(targetExecutionContext);
+
+    if (targetExecutionContext->isWorkerGlobalScope()) {
+        // worker's isolate contains only a single worker, so any access is allowed.
+        return true;
+    }
+
+    ExecutionContext* callingExecutionContext = toExecutionContext(calling);
+    DCHECK(callingExecutionContext);
+
+    if (targetExecutionContext->isMainThreadWorkletGlobalScope())
+        return shouldAllowAccessTo(isolate, calling, callingExecutionContext, toMainThreadWorkletGlobalScope(targetExecutionContext), reportingOption);
+
+
+    if (callingExecutionContext->isMainThreadWorkletGlobalScope())
+        return shouldAllowAccessTo(isolate, target, targetExecutionContext, toMainThreadWorkletGlobalScope(callingExecutionContext), reportingOption);
+
+    DOMWindow* window = toDOMWindow(target);
+    return window && shouldAllowAccessTo(isolate, toLocalDOMWindow(toDOMWindow(calling)), window, DoNotReportSecurityError);
+}
+
 } // namespace blink