Add PluginServiceFilter interface.

content/browser/mock_content_browser_client.cc

Index: content/browser/mock_content_browser_client.cc
diff --git a/content/browser/mock_content_browser_client.cc b/content/browser/mock_content_browser_client.cc
index a3fa95cded52e18c73642b9d6b1bedb1adf5edde..33016f54ff995db8607a28943d0e723a13d473dd 100644
--- a/content/browser/mock_content_browser_client.cc
+++ b/content/browser/mock_content_browser_client.cc
@@ -12,6 +12,19 @@
 #include "ui/base/clipboard/clipboard.h"
 #include "webkit/glue/webpreferences.h"
 
+namespace {
+
+class DummyPluginFilter : public PluginService::Filter {
+ public:
+  DummyPluginFilter() {}
+
+  virtual bool ShouldUsePlugin(webkit::npapi::WebPluginInfo* plugin) OVERRIDE {
+    return true;
+  }
+};
+
+}  // namespace
+
 namespace content {
 
 MockContentBrowserClient::~MockContentBrowserClient() {
@@ -100,6 +113,15 @@ bool MockContentBrowserClient::AllowSaveLocalState(
   return true;
 }
 
+PluginService::Filter* MockContentBrowserClient::CreatePluginFilter(
+    int render_process_id,
+    int render_view_id,
+    const content::ResourceContext& context,
+    const GURL& url,
+    const GURL& policy_url) {
+  return new DummyPluginFilter();
+}
+
 QuotaPermissionContext*
     MockContentBrowserClient::CreateQuotaPermissionContext() {
   return NULL;