Remove ScopedVector from ios/.

ios/web/webui/web_ui_ios_impl.h

Index: ios/web/webui/web_ui_ios_impl.h
diff --git a/ios/web/webui/web_ui_ios_impl.h b/ios/web/webui/web_ui_ios_impl.h
index ca83b9ebde3d801431fe2d93045eac640c351d7d..7440cdbbda9eebfe2cf15347c69ad2c3a38e388b 100644
--- a/ios/web/webui/web_ui_ios_impl.h
+++ b/ios/web/webui/web_ui_ios_impl.h
@@ -7,10 +7,10 @@
 
 #include <map>
 #include <memory>
+#include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
-#include "base/memory/scoped_vector.h"
 #include "base/memory/weak_ptr.h"
 #include "ios/web/public/webui/web_ui_ios.h"
 
@@ -30,7 +30,8 @@ class WebUIIOSImpl : public web::WebUIIOS,
   WebState* GetWebState() const override;
   WebUIIOSController* GetController() const override;
   void SetController(WebUIIOSController* controller) override;
-  void AddMessageHandler(WebUIIOSMessageHandler* handler) override;
+  void AddMessageHandler(
+      std::unique_ptr<WebUIIOSMessageHandler> handler) override;
   typedef base::Callback<void(const base::ListValue*)> MessageCallback;
   void RegisterMessageCallback(const std::string& message,
                                const MessageCallback& callback) override;
@@ -65,7 +66,7 @@ class WebUIIOSImpl : public web::WebUIIOS,
   MessageCallbackMap message_callbacks_;
 
   // The WebUIIOSMessageHandlers we own.
-  ScopedVector<WebUIIOSMessageHandler> handlers_;
+  std::vector<std::unique_ptr<WebUIIOSMessageHandler>> handlers_;
 
   // Non-owning pointer to the WebStateImpl this WebUIIOS is associated with.
   WebStateImpl* web_state_;