PlzNavigate: Enforce 'frame-src' CSP on the browser.

third_party/WebKit/Source/core/loader/EmptyClients.h

Index: third_party/WebKit/Source/core/loader/EmptyClients.h
diff --git a/third_party/WebKit/Source/core/loader/EmptyClients.h b/third_party/WebKit/Source/core/loader/EmptyClients.h
index 66543a678075dc78c2c11c6bfdf5ca28cda19c36..2a1fa39899806de1949c65f1ac715cdcf331bad2 100644
--- a/third_party/WebKit/Source/core/loader/EmptyClients.h
+++ b/third_party/WebKit/Source/core/loader/EmptyClients.h
@@ -271,13 +271,15 @@ class CORE_EXPORT EmptyFrameLoaderClient : public FrameLoaderClient {
   void dispatchDidFinishLoad() override {}
   void dispatchDidChangeThemeColor() override {}
 
-  NavigationPolicy decidePolicyForNavigation(const ResourceRequest&,
-                                             DocumentLoader*,
-                                             NavigationType,
-                                             NavigationPolicy,
-                                             bool,
-                                             bool,
-                                             HTMLFormElement*) override;
+  NavigationPolicy decidePolicyForNavigation(
+      const ResourceRequest&,
+      DocumentLoader*,
+      NavigationType,
+      NavigationPolicy,
+      bool,
+      bool,
+      HTMLFormElement*,
+      ContentSecurityPolicyDisposition) override;
 
   void dispatchWillSendSubmitEvent(HTMLFormElement*) override;
   void dispatchWillSubmitForm(HTMLFormElement*) override;