diff --git third_party/WebKit/Source/core/dom/DOMImplementation.cpp third_party/WebKit/Source/core/dom/DOMImplementation.cpp
index 9a7f30516021..22f1214abbe2 100644
--- third_party/WebKit/Source/core/dom/DOMImplementation.cpp
+++ third_party/WebKit/Source/core/dom/DOMImplementation.cpp
@@ -242,10 +242,11 @@ Document* DOMImplementation::createDocument(const String& type,
     // For that reason, the origin must be retrieved directly from init.url().
     if (init.GetFrame()->IsMainFrame()) {
       RefPtr<SecurityOrigin> origin = SecurityOrigin::Create(init.Url());
-      plugin_data = init.GetFrame()->GetPage()->GetPluginData(origin.Get());
+      plugin_data = init.GetFrame()->GetPage()->GetPluginData(true,
+                                                              origin.Get());
     } else {
       plugin_data =
-          init.GetFrame()->GetPage()->GetPluginData(init.GetFrame()
+          init.GetFrame()->GetPage()->GetPluginData(false, init.GetFrame()
                                                         ->Tree()
                                                         .Top()
                                                         .GetSecurityContext()
diff --git third_party/WebKit/Source/core/frame/LocalFrame.cpp third_party/WebKit/Source/core/frame/LocalFrame.cpp
index a06acdcd51ff..90ba2c860542 100644
--- third_party/WebKit/Source/core/frame/LocalFrame.cpp
+++ third_party/WebKit/Source/core/frame/LocalFrame.cpp
@@ -1016,7 +1016,7 @@ FrameResourceCoordinator* LocalFrame::GetFrameResourceCoordinator() {
 PluginData* LocalFrame::GetPluginData() const {
   if (!Loader().AllowPlugins(kNotAboutToInstantiatePlugin))
     return nullptr;
-  return GetPage()->GetPluginData(
+  return GetPage()->GetPluginData(IsMainFrame(),
       Tree().Top().GetSecurityContext()->GetSecurityOrigin());
 }
 
diff --git third_party/WebKit/Source/core/page/Page.cpp third_party/WebKit/Source/core/page/Page.cpp
index bdc85924f2b3..8105be8f4e5d 100644
--- third_party/WebKit/Source/core/page/Page.cpp
+++ third_party/WebKit/Source/core/page/Page.cpp
@@ -126,7 +126,8 @@ Page::Page(PageClients& page_clients)
       overscroll_controller_(
           OverscrollController::Create(GetVisualViewport(), GetChromeClient())),
       main_frame_(nullptr),
-      plugin_data_(nullptr),
+      plugin_data_main_frame_(nullptr),
+      plugin_data_sub_frame_(nullptr),
       editor_client_(page_clients.editor_client),
       spell_checker_client_(page_clients.spell_checker_client),
       use_counter_(page_clients.chrome_client &&
@@ -300,21 +301,38 @@ void Page::RefreshPlugins() {
   PluginData::RefreshBrowserSidePluginCache();
 }
 
-PluginData* Page::GetPluginData(SecurityOrigin* main_frame_origin) {
-  if (!plugin_data_)
-    plugin_data_ = PluginData::Create();
+PluginData* Page::GetPluginData(bool is_main_frame,
+                                SecurityOrigin* main_frame_origin) {
+  if (is_main_frame) {
+    if (!plugin_data_main_frame_)
+      plugin_data_main_frame_ = PluginData::Create();
 
-  if (!plugin_data_->Origin() ||
-      !main_frame_origin->IsSameSchemeHostPort(plugin_data_->Origin()))
-    plugin_data_->UpdatePluginList(main_frame_origin);
+    if (!plugin_data_main_frame_->Origin() ||
+        !main_frame_origin->IsSameSchemeHostPort(
+            plugin_data_main_frame_->Origin()))
+      plugin_data_main_frame_->UpdatePluginList(true, main_frame_origin);
 
-  return plugin_data_.Get();
+    return plugin_data_main_frame_.Get();
+  } else {
+    if (!plugin_data_sub_frame_)
+      plugin_data_sub_frame_ = PluginData::Create();
+
+    if (!plugin_data_sub_frame_->Origin() ||
+        !main_frame_origin->IsSameSchemeHostPort(
+            plugin_data_sub_frame_->Origin()))
+      plugin_data_sub_frame_->UpdatePluginList(false, main_frame_origin);
+
+    return plugin_data_sub_frame_.Get();
+  }
 }
 
 void Page::ResetPluginData() {
   for (Page* page : AllPages()) {
-    if (page->plugin_data_) {
-      page->plugin_data_->ResetPluginData();
+    if (page->plugin_data_main_frame_ || page->plugin_data_sub_frame_) {
+      if (page->plugin_data_main_frame_)
+        page->plugin_data_main_frame_->ResetPluginData();
+      if (page->plugin_data_sub_frame_)
+        page->plugin_data_sub_frame_->ResetPluginData();
       page->NotifyPluginsChanged();
     }
   }
@@ -661,7 +679,8 @@ DEFINE_TRACE(Page) {
   visitor->Trace(visual_viewport_);
   visitor->Trace(overscroll_controller_);
   visitor->Trace(main_frame_);
-  visitor->Trace(plugin_data_);
+  visitor->Trace(plugin_data_main_frame_);
+  visitor->Trace(plugin_data_sub_frame_);
   visitor->Trace(validation_message_client_);
   visitor->Trace(use_counter_);
   visitor->Trace(plugins_changed_observers_);
diff --git third_party/WebKit/Source/core/page/Page.h third_party/WebKit/Source/core/page/Page.h
index 0ba364b0a934..e9b79de58841 100644
--- third_party/WebKit/Source/core/page/Page.h
+++ third_party/WebKit/Source/core/page/Page.h
@@ -135,7 +135,8 @@ class CORE_EXPORT Page final : public GarbageCollectedFinalized<Page>,
   ViewportDescription GetViewportDescription() const;
 
   // Returns the plugin data associated with |main_frame_origin|.
-  PluginData* GetPluginData(SecurityOrigin* main_frame_origin);
+  PluginData* GetPluginData(bool is_main_frame,
+                            SecurityOrigin* main_frame_origin);
 
   // Refreshes the browser-side plugin cache.
   static void RefreshPlugins();
@@ -351,7 +352,8 @@ class CORE_EXPORT Page final : public GarbageCollectedFinalized<Page>,
   // longer needed.
   Member<Frame> main_frame_;
 
-  Member<PluginData> plugin_data_;
+  Member<PluginData> plugin_data_main_frame_;
+  Member<PluginData> plugin_data_sub_frame_;
 
   EditorClient* const editor_client_;
   SpellCheckerClient* const spell_checker_client_;
diff --git third_party/WebKit/Source/platform/plugins/PluginData.cpp third_party/WebKit/Source/platform/plugins/PluginData.cpp
index 5eb6af5fbdd5..eac85461c7de 100644
--- third_party/WebKit/Source/platform/plugins/PluginData.cpp
+++ third_party/WebKit/Source/platform/plugins/PluginData.cpp
@@ -79,16 +79,18 @@ DEFINE_TRACE(PluginData) {
 // static
 void PluginData::RefreshBrowserSidePluginCache() {
   PluginListBuilder builder(nullptr);
-  Platform::Current()->GetPluginList(true, WebSecurityOrigin::CreateUnique(),
+  Platform::Current()->GetPluginList(true, true,
+                                     WebSecurityOrigin::CreateUnique(),
                                      &builder);
 }
 
-void PluginData::UpdatePluginList(SecurityOrigin* main_frame_origin) {
+void PluginData::UpdatePluginList(bool is_main_frame,
+                                  SecurityOrigin* main_frame_origin) {
   ResetPluginData();
   main_frame_origin_ = main_frame_origin;
   PluginListBuilder builder(&plugins_);
   Platform::Current()->GetPluginList(
-      false, WebSecurityOrigin(main_frame_origin_), &builder);
+      false, is_main_frame, WebSecurityOrigin(main_frame_origin_), &builder);
 
   for (PluginInfo* plugin_info : plugins_) {
     for (MimeClassInfo* mime_class_info : plugin_info->mimes_)
diff --git third_party/WebKit/Source/platform/plugins/PluginData.h third_party/WebKit/Source/platform/plugins/PluginData.h
index 6cb520cd5810..fdcaf938b28a 100644
--- third_party/WebKit/Source/platform/plugins/PluginData.h
+++ third_party/WebKit/Source/platform/plugins/PluginData.h
@@ -93,7 +93,7 @@ class PLATFORM_EXPORT PluginData final
   const HeapVector<Member<PluginInfo>>& Plugins() const { return plugins_; }
   const HeapVector<Member<MimeClassInfo>>& Mimes() const { return mimes_; }
   const SecurityOrigin* Origin() const { return main_frame_origin_.Get(); }
-  void UpdatePluginList(SecurityOrigin* main_frame_origin);
+  void UpdatePluginList(bool is_main_frame, SecurityOrigin* main_frame_origin);
   void ResetPluginData();
 
   bool SupportsMimeType(const String& mime_type) const;
diff --git third_party/WebKit/public/platform/Platform.h third_party/WebKit/public/platform/Platform.h
index de906059109c..baaeb09ec8f5 100644
--- third_party/WebKit/public/platform/Platform.h
+++ third_party/WebKit/public/platform/Platform.h
@@ -384,6 +384,7 @@ class BLINK_PLATFORM_EXPORT Platform {
   // satisfy this call. mainFrameOrigin is used by the browser process to
   // filter plugins from the plugin list based on content settings.
   virtual void GetPluginList(bool refresh,
+                             bool is_main_frame,
                              const WebSecurityOrigin& main_frame_origin,
                              WebPluginListBuilder*) {}