Move blink::PluginData, blink::PluginInfo, blink::MimeTypeInfo to oilpan heap.

third_party/WebKit/Source/platform/plugins/PluginListBuilder.h

Index: third_party/WebKit/Source/platform/plugins/PluginListBuilder.h
diff --git a/third_party/WebKit/Source/platform/plugins/PluginListBuilder.h b/third_party/WebKit/Source/platform/plugins/PluginListBuilder.h
index 0e71f79aeeab62e15f876887742a8748e2c09160..2dfcbec6fe6cae5ee89b59f91ced190dc1adbf7a 100644
--- a/third_party/WebKit/Source/platform/plugins/PluginListBuilder.h
+++ b/third_party/WebKit/Source/platform/plugins/PluginListBuilder.h
@@ -39,10 +39,11 @@
 namespace blink {
 
 class PluginListBuilder final : public WebPluginListBuilder {
-  DISALLOW_NEW();
+  STACK_ALLOCATED();
 
  public:
-  PluginListBuilder(Vector<PluginInfo>* results) : results_(results) {}
+  PluginListBuilder(HeapVector<Member<PluginInfo>>* results)
+      : results_(results) {}
 
   // WebPluginListBuilder methods:
   void AddPlugin(const WebString& name,
@@ -53,7 +54,7 @@ class PluginListBuilder final : public WebPluginListBuilder {
   void AddFileExtensionToLastMediaType(const WebString& extension) override;
 
  private:
-  Vector<PluginInfo>* results_;
+  Member<HeapVector<Member<PluginInfo>>> results_;
 };
 
 }  // namespace blink