diff --git third_party/WebKit/Source/core/dom/DOMImplementation.cpp third_party/WebKit/Source/core/dom/DOMImplementation.cpp
index 372b21d..78107f3 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 9c6d497..6296f53 100644
--- third_party/WebKit/Source/core/frame/LocalFrame.cpp
+++ third_party/WebKit/Source/core/frame/LocalFrame.cpp
@@ -930,7 +930,7 @@ ContentSettingsClient* LocalFrame::GetContentSettingsClient() {
 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 6dc4b21..41d56b5 100644
--- third_party/WebKit/Source/core/page/Page.cpp
+++ third_party/WebKit/Source/core/page/Page.cpp
@@ -289,16 +289,30 @@ void Page::RefreshPlugins() {
 
   for (const Page* page : AllPages()) {
     // Clear out the page's plugin data.
-    if (page->plugin_data_)
-      page->plugin_data_ = nullptr;
+    if (page->plugin_data_main_frame_)
+      page->plugin_data_main_frame_ = nullptr;
+    if (page->plugin_data_sub_frame_)
+      page->plugin_data_sub_frame_ = nullptr;
   }
 }
 
-PluginData* Page::GetPluginData(SecurityOrigin* main_frame_origin) const {
-  if (!plugin_data_ ||
-      !main_frame_origin->IsSameSchemeHostPort(plugin_data_->Origin()))
-    plugin_data_ = PluginData::Create(main_frame_origin);
-  return plugin_data_.Get();
+PluginData* Page::GetPluginData(bool is_main_frame,
+                                SecurityOrigin* main_frame_origin) const {
+  if (is_main_frame) {
+    if (!plugin_data_main_frame_ ||
+        !main_frame_origin->IsSameSchemeHostPort(
+            plugin_data_main_frame_->Origin())) {
+      plugin_data_main_frame_ = PluginData::Create(true, main_frame_origin);
+    }
+    return plugin_data_main_frame_.Get();
+  } else {
+    if (!plugin_data_sub_frame_ ||
+        !main_frame_origin->IsSameSchemeHostPort(
+            plugin_data_sub_frame_->Origin())) {
+      plugin_data_sub_frame_ = PluginData::Create(false, main_frame_origin);
+    }
+    return plugin_data_sub_frame_.Get();
+  }
 }
 
 void Page::SetValidationMessageClient(ValidationMessageClient* client) {
diff --git third_party/WebKit/Source/core/page/Page.h third_party/WebKit/Source/core/page/Page.h
index e644faa..2fe0d37 100644
--- third_party/WebKit/Source/core/page/Page.h
+++ third_party/WebKit/Source/core/page/Page.h
@@ -132,7 +132,8 @@ class CORE_EXPORT Page final : public GarbageCollectedFinalized<Page>,
   ViewportDescription GetViewportDescription() const;
 
   static void RefreshPlugins();
-  PluginData* GetPluginData(SecurityOrigin* main_frame_origin) const;
+  PluginData* GetPluginData(bool is_main_frame,
+                            SecurityOrigin* main_frame_origin) const;
 
   EditorClient& GetEditorClient() const { return *editor_client_; }
   SpellCheckerClient& GetSpellCheckerClient() const {
@@ -324,7 +325,8 @@ class CORE_EXPORT Page final : public GarbageCollectedFinalized<Page>,
   // longer needed.
   Member<Frame> main_frame_;
 
-  mutable RefPtr<PluginData> plugin_data_;
+  mutable RefPtr<PluginData> plugin_data_main_frame_;
+  mutable RefPtr<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 03618f6..5ac59e8 100644
--- third_party/WebKit/Source/platform/plugins/PluginData.cpp
+++ third_party/WebKit/Source/platform/plugins/PluginData.cpp
@@ -30,11 +30,12 @@
 
 namespace blink {
 
-PluginData::PluginData(SecurityOrigin* main_frame_origin)
-    : main_frame_origin_(main_frame_origin) {
+PluginData::PluginData(bool is_main_frame, SecurityOrigin* main_frame_origin)
+    : is_main_frame_(is_main_frame),
+      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 (unsigned i = 0; i < plugins_.size(); ++i) {
     const PluginInfo& plugin = plugins_[i];
@@ -73,7 +74,8 @@ String PluginData::PluginNameForMimeType(const String& mime_type) const {
 void PluginData::RefreshBrowserSidePluginCache() {
   Vector<PluginInfo> plugins;
   PluginListBuilder builder(&plugins);
-  Platform::Current()->GetPluginList(true, WebSecurityOrigin::CreateUnique(),
+  Platform::Current()->GetPluginList(true, true,
+                                     WebSecurityOrigin::CreateUnique(),
                                      &builder);
 }
 
diff --git third_party/WebKit/Source/platform/plugins/PluginData.h third_party/WebKit/Source/platform/plugins/PluginData.h
index cdf3381..671f17c 100644
--- third_party/WebKit/Source/platform/plugins/PluginData.h
+++ third_party/WebKit/Source/platform/plugins/PluginData.h
@@ -52,8 +52,9 @@ class PLATFORM_EXPORT PluginData : public RefCounted<PluginData> {
   WTF_MAKE_NONCOPYABLE(PluginData);
 
  public:
-  static PassRefPtr<PluginData> Create(SecurityOrigin* main_frame_origin) {
-    return AdoptRef(new PluginData(main_frame_origin));
+  static PassRefPtr<PluginData> Create(bool is_main_frame,
+                                       SecurityOrigin* main_frame_origin) {
+    return AdoptRef(new PluginData(is_main_frame, main_frame_origin));
   }
 
   const Vector<PluginInfo>& Plugins() const { return plugins_; }
@@ -71,12 +72,13 @@ class PLATFORM_EXPORT PluginData : public RefCounted<PluginData> {
   static void RefreshBrowserSidePluginCache();
 
  private:
-  explicit PluginData(SecurityOrigin* main_frame_origin);
+  explicit PluginData(bool is_main_frame, SecurityOrigin* main_frame_origin);
   const PluginInfo* PluginInfoForMimeType(const String& mime_type) const;
 
   Vector<PluginInfo> plugins_;
   Vector<MimeClassInfo> mimes_;
   Vector<size_t> mime_plugin_indices_;
+  bool is_main_frame_;
   RefPtr<SecurityOrigin> main_frame_origin_;
 };
 
diff --git third_party/WebKit/public/platform/Platform.h third_party/WebKit/public/platform/Platform.h
index f7360bf6..f7599cc 100644
--- third_party/WebKit/public/platform/Platform.h
+++ third_party/WebKit/public/platform/Platform.h
@@ -363,6 +363,7 @@ 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*) {}