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

third_party/WebKit/Source/web/FrameLoaderClientImpl.h

Index: third_party/WebKit/Source/web/FrameLoaderClientImpl.h
diff --git a/third_party/WebKit/Source/web/FrameLoaderClientImpl.h b/third_party/WebKit/Source/web/FrameLoaderClientImpl.h
index 75ae5b30afd56a1d847803127ae214cc7239d068..2b644d60e497591639fe7c31898ca5818ce12bbd 100644
--- a/third_party/WebKit/Source/web/FrameLoaderClientImpl.h
+++ b/third_party/WebKit/Source/web/FrameLoaderClientImpl.h
@@ -103,13 +103,15 @@ class FrameLoaderClientImpl final : public FrameLoaderClient {
   void dispatchDidFinishLoad() override;
 
   void dispatchDidChangeThemeColor() override;
-  NavigationPolicy decidePolicyForNavigation(const ResourceRequest&,
-                                             DocumentLoader*,
-                                             NavigationType,
-                                             NavigationPolicy,
-                                             bool shouldReplaceCurrentEntry,
-                                             bool isClientRedirect,
-                                             HTMLFormElement*) override;
+  NavigationPolicy decidePolicyForNavigation(
+      const ResourceRequest&,
+      DocumentLoader*,
+      NavigationType,
+      NavigationPolicy,
+      bool shouldReplaceCurrentEntry,
+      bool isClientRedirect,
+      HTMLFormElement*,
+      ContentSecurityPolicyDisposition shouldBypassMainWorldCSP) override;
   void dispatchWillSendSubmitEvent(HTMLFormElement*) override;
   void dispatchWillSubmitForm(HTMLFormElement*) override;
   void didStartLoading(LoadStartType) override;