[cr137] IWYU fixes

This change corrects some of the forward declarations.

browser/ui/views/overlay/brave_video_overlay_window_views.cc

@@ -26,6 +26,7 @@
 #include "chrome/grit/generated_resources.h"
 #include "ui/base/hit_test.h"
 #include "ui/base/l10n/l10n_util.h"
+#include "ui/compositor/layer.h"
 #include "ui/gfx/canvas.h"
 
 namespace {

components/ai_chat/core/browser/ai_chat_database.cc

@@ -13,6 +13,7 @@
 
 #include "base/check.h"
 #include "base/strings/string_split.h"
+#include "base/strings/string_util.h"
 #include "base/threading/thread_restrictions.h"
 #include "brave/components/ai_chat/core/common/mojom/ai_chat.mojom.h"
 #include "brave/components/ai_chat/core/proto/store.pb.h"

components/brave_ads/core/internal/creatives/creative_ads_database_table.cc

@@ -13,6 +13,7 @@
 #include "base/check.h"
 #include "base/functional/bind.h"
 #include "base/location.h"
+#include "base/strings/string_util.h"
 #include "brave/components/brave_ads/core/internal/common/database/database_column_util.h"
 #include "brave/components/brave_ads/core/internal/common/database/database_table_util.h"
 #include "brave/components/brave_ads/core/internal/common/database/database_transaction_util.h"

components/brave_ads/core/internal/creatives/new_tab_page_ads/creative_new_tab_page_ads_database_table.cc

@@ -14,6 +14,7 @@
 #include "base/check.h"
 #include "base/functional/bind.h"
 #include "base/location.h"
+#include "base/strings/string_util.h"
 #include "base/time/time.h"
 #include "brave/components/brave_ads/core/internal/common/algorithm/split_vector_util.h"
 #include "brave/components/brave_ads/core/internal/common/database/database_column_util.h"

third_party/blink/renderer/core/brave_page_graph/page_graph.h

@@ -93,6 +93,8 @@ class EventTarget;
 class EncodedFormData;
 class ModuleScriptCreationParams;
 class ReferrerScriptInfo;
+class QualifiedName;
+class RegisteredEventListener;
 
 enum class RenderBlockingBehavior : uint8_t;
 enum class ResourceType : uint8_t;