Switch ContentSettingsObserver to be a RenderFrameObserver instead of a RenderViewObserver

chrome/browser/tab_contents/render_view_context_menu.cc

Index: chrome/browser/tab_contents/render_view_context_menu.cc
===================================================================
--- chrome/browser/tab_contents/render_view_context_menu.cc	(revision 240362)
+++ chrome/browser/tab_contents/render_view_context_menu.cc	(working copy)
@@ -1524,7 +1524,7 @@
 #if defined(ENABLE_PLUGINS)
     if (context.request_id && !context.is_pepper_menu) {
       ChromePluginServiceFilter::GetInstance()->AuthorizeAllPlugins(
-        rvh->GetProcess()->GetID());
+        source_web_contents_, false, std::string());
     }
 #endif
     rvh->ExecuteCustomContextMenuCommand(action, context);