Migrate WTF::HashSet::add() to ::insert() [part 1 of N]

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

Index: third_party/WebKit/Source/bindings/core/v8/SerializedScriptValue.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/SerializedScriptValue.cpp b/third_party/WebKit/Source/bindings/core/v8/SerializedScriptValue.cpp
index 34f5c3b76de29b875241ab5f27078bb1dae4583e..06ead69bf05e9c36ccf0f7b397d2614d69db8fd3 100644
--- a/third_party/WebKit/Source/bindings/core/v8/SerializedScriptValue.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/SerializedScriptValue.cpp
@@ -231,7 +231,7 @@ SerializedScriptValue::transferImageBitmapContents(
   for (size_t i = 0; i < imageBitmaps.size(); ++i) {
     if (visited.contains(imageBitmaps[i]))
       continue;
-    visited.add(imageBitmaps[i]);
+    visited.insert(imageBitmaps[i]);
     contents->push_back(imageBitmaps[i]->transfer());
   }
   return contents;
@@ -269,7 +269,7 @@ void SerializedScriptValue::transferOffscreenCanvas(
                               " has an associated context.");
       return;
     }
-    visited.add(offscreenCanvases[i].get());
+    visited.insert(offscreenCanvases[i].get());
     offscreenCanvases[i].get()->setNeutered();
   }
 }
@@ -421,7 +421,7 @@ SerializedScriptValue::transferArrayBufferContents(
     DOMArrayBufferBase* arrayBuffer = *it;
     if (visited.contains(arrayBuffer))
       continue;
-    visited.add(arrayBuffer);
+    visited.insert(arrayBuffer);
 
     size_t index = std::distance(arrayBuffers.begin(), it);
     if (arrayBuffer->isShared()) {