[Blink] Retroactive nit fixes

Fix last nits from
https://chromium-review.googlesource.com/c/chromium/src/+/1501497

Bug: None
Change-Id: I845ee28bce4f9558254eb2680f976bf024f404a9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1506118
Commit-Queue: Devlin <rdevlin.cronin@chromium.org>
Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#638274}

third_party/blink/renderer/core/exported/web_console_message.cc

@@ -5,8 +5,10 @@
 #include "third_party/blink/public/web/web_console_message.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/execution_context/execution_context.h"
 #include "third_party/blink/renderer/core/inspector/console_message.h"
+#include "third_party/blink/renderer/platform/wtf/casting.h"
 
 namespace blink {
 
@@ -16,8 +18,11 @@ void WebConsoleMessage::LogWebConsoleMessage(v8::Local<v8::Context> context,
   if (!execution_context)  // Can happen in unittests.
     return;
 
+  LocalFrame* frame = nullptr;
+  if (auto* document = DynamicTo<Document>(execution_context))
+    frame = document->GetFrame();
   execution_context->AddConsoleMessage(
-      ConsoleMessage::CreateFromWebConsoleMessage(message, nullptr));
+      ConsoleMessage::CreateFromWebConsoleMessage(message, frame));
 }
 
 }  // namespace blink

third_party/blink/renderer/core/inspector/console_message.h

@@ -50,9 +50,8 @@ class CORE_EXPORT ConsoleMessage final
                                           WorkerThread*);
 
   // Creates a ConsoleMessage from a similar WebConsoleMessage.
-  static ConsoleMessage* CreateFromWebConsoleMessage(
-      const WebConsoleMessage& message,
-      LocalFrame* local_frame);
+  static ConsoleMessage* CreateFromWebConsoleMessage(const WebConsoleMessage&,
+                                                     LocalFrame*);
 
   ConsoleMessage(MessageSource,
                  mojom::ConsoleMessageLevel,