[HBD] Remove PluginCache and reload plugin list when origin changes

third_party/WebKit/Source/core/page/Page.cpp

Index: third_party/WebKit/Source/core/page/Page.cpp
diff --git a/third_party/WebKit/Source/core/page/Page.cpp b/third_party/WebKit/Source/core/page/Page.cpp
index 4e2a89a2e20ff22690e5f00de814170cd6d4b0ce..5d5f186c7ed67bfc887c7dd2041e28f0f169a083 100644
--- a/third_party/WebKit/Source/core/page/Page.cpp
+++ b/third_party/WebKit/Source/core/page/Page.cpp
@@ -54,6 +54,7 @@
 #include "platform/plugins/PluginData.h"
 #include "platform/text/CompressibleString.h"
 #include "public/platform/Platform.h"
+#include "public/platform/WebSecurityOrigin.h"
 
 namespace blink {
 
@@ -243,10 +244,14 @@ void Page::refreshPlugins()
     }
 }
 
-PluginData* Page::pluginData() const
+PluginData* Page::pluginData()
 {
-    if (!m_pluginData)
-        m_pluginData = PluginData::create(this);
+    RefPtr<SecurityOrigin> mainFrameOrigin = mainFrame()->securityContext()->getSecurityOrigin();
+    WebSecurityOrigin webOrigin(mainFrameOrigin.get());
+
+    if (!m_pluginData || !mainFrameOrigin->isSameSchemeHostPort(m_mainFrameOrigin.get()))
+        m_pluginData = PluginData::create(webOrigin);
+    m_mainFrameOrigin = mainFrameOrigin;
     return m_pluginData.get();
 }