ExecutionContext post-migration cleaniup - core/layout/

While migrating ExecutionContext to LocalDOMWindow, several helpers
were introduced on Document (From(), DynamicFrom(),
ToExecutionContext()). This CL removes usage of these types from this
directory.

From() and DynamicFrom() are replaced with the standard
downcast helpers for LocalDOMWindow. ToExecutionContext() is replaced
with a direct path to the LocalDOMWindow, or Node::GetExecutionContext(),
or Document::GetExecutionContext(), whichever is most direct from the
callsite.

Bug: 1029822
Change-Id: I83d37613caac05b54db3e7ca9e31c9bb9036e64e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2106805Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Ian Kilpatrick <ikilpatrick@chromium.org>
Commit-Queue: Nate Chapin <japhet@chromium.org>
Cr-Commit-Position: refs/heads/master@{#751536}

third_party/blink/renderer/core/layout/layout_block_test.cc

@@ -54,7 +54,7 @@ TEST_F(LayoutBlockTest, WidthAvailableToChildrenChanged) {
             150 - list_box->VerticalScrollbarWidth());
 
   DummyExceptionStateForTesting exception_state;
-  list_element->style()->setCSSText(GetDocument().ToExecutionContext(),
+  list_element->style()->setCSSText(GetDocument().GetExecutionContext(),
                                     "width:150px;height:100px;",
                                     exception_state);
   ASSERT_FALSE(exception_state.HadException());

third_party/blink/renderer/core/layout/ng/custom/layout_worklet.cc

@@ -59,8 +59,9 @@ bool LayoutWorklet::NeedsToCreateGlobalScope() {
 WorkletGlobalScopeProxy* LayoutWorklet::CreateGlobalScope() {
   DCHECK(NeedsToCreateGlobalScope());
   return MakeGarbageCollected<LayoutWorkletGlobalScopeProxy>(
-      Document::From(GetExecutionContext())->GetFrame(), ModuleResponsesMap(),
-      pending_layout_registry_, GetNumberOfGlobalScopes() + 1);
+      To<LocalDOMWindow>(GetExecutionContext())->GetFrame(),
+      ModuleResponsesMap(), pending_layout_registry_,
+      GetNumberOfGlobalScopes() + 1);
 }
 
 }  // namespace blink

third_party/blink/renderer/core/layout/ng/custom/layout_worklet_global_scope.cc

@@ -104,7 +104,7 @@ void LayoutWorkletGlobalScope::registerLayout(
   Vector<AtomicString> custom_invalidation_properties;
 
   if (!V8ObjectParser::ParseCSSPropertyList(
-          current_context, GetFrame()->GetDocument()->ToExecutionContext(),
+          current_context, GetFrame()->DomWindow(),
           layout_ctor->CallbackObject(), "inputProperties",
           &native_invalidation_properties, &custom_invalidation_properties,
           &exception_state))
@@ -114,7 +114,7 @@ void LayoutWorkletGlobalScope::registerLayout(
   Vector<AtomicString> child_custom_invalidation_properties;
 
   if (!V8ObjectParser::ParseCSSPropertyList(
-          current_context, GetFrame()->GetDocument()->ToExecutionContext(),
+          current_context, GetFrame()->DomWindow(),
           layout_ctor->CallbackObject(), "childInputProperties",
           &child_native_invalidation_properties,
           &child_custom_invalidation_properties, &exception_state))
@@ -145,8 +145,7 @@ void LayoutWorkletGlobalScope::registerLayout(
       child_custom_invalidation_properties);
   layout_definitions_.Set(name, definition);
 
-  LayoutWorklet* layout_worklet =
-      LayoutWorklet::From(*GetFrame()->GetDocument()->domWindow());
+  LayoutWorklet* layout_worklet = LayoutWorklet::From(*GetFrame()->DomWindow());
   LayoutWorklet::DocumentDefinitionMap* document_definition_map =
       layout_worklet->GetDocumentDefinitionMap();
   if (document_definition_map->Contains(name)) {

third_party/blink/renderer/core/layout/ng/custom/layout_worklet_global_scope_proxy.cc

@@ -9,6 +9,7 @@
 #include "third_party/blink/renderer/bindings/core/v8/script_source_code.h"
 #include "third_party/blink/renderer/bindings/core/v8/v8_binding_for_core.h"
 #include "third_party/blink/renderer/core/dom/document.h"
+#include "third_party/blink/renderer/core/frame/local_dom_window.h"
 #include "third_party/blink/renderer/core/frame/local_frame.h"
 #include "third_party/blink/renderer/core/frame/local_frame_client.h"
 #include "third_party/blink/renderer/core/loader/worker_fetch_context.h"
@@ -49,7 +50,7 @@ LayoutWorkletGlobalScopeProxy::LayoutWorkletGlobalScopeProxy(
       nullptr /* worker_clients */,
       frame->Client()->CreateWorkerContentSettingsClient(),
       document->GetSecurityContext().AddressSpace(),
-      OriginTrialContext::GetTokens(document->ToExecutionContext()).get(),
+      OriginTrialContext::GetTokens(frame->DomWindow()).get(),
       base::UnguessableToken::Create(), nullptr /* worker_settings */,
       kV8CacheOptionsDefault, module_responses_map,
       mojo::NullRemote() /* browser_interface_broker */,