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

third_party/WebKit/Source/web/LocalFrameClientImpl.cpp

Index: third_party/WebKit/Source/web/LocalFrameClientImpl.cpp
diff --git a/third_party/WebKit/Source/web/LocalFrameClientImpl.cpp b/third_party/WebKit/Source/web/LocalFrameClientImpl.cpp
index 72eb1edd9b4690c68ee52918360f68f4de9844a3..695797581ebac29c7df65829e33d791636e512ad 100644
--- a/third_party/WebKit/Source/web/LocalFrameClientImpl.cpp
+++ b/third_party/WebKit/Source/web/LocalFrameClientImpl.cpp
@@ -534,9 +534,7 @@
     NavigationPolicy policy,
     bool replacesCurrentHistoryItem,
     bool isClientRedirect,
-    HTMLFormElement* form,
-    ContentSecurityPolicyDisposition
-        shouldCheckMainWorldContentSecurityPolicy) {
+    HTMLFormElement* form) {
   if (!m_webFrame->client())
     return NavigationPolicyIgnore;
 
@@ -573,10 +571,6 @@
   navigationInfo.isHistoryNavigationInNewChildFrame =
       isHistoryNavigationInNewChildFrame;
   navigationInfo.isClientRedirect = isClientRedirect;
-  navigationInfo.shouldCheckMainWorldContentSecurityPolicy =
-      shouldCheckMainWorldContentSecurityPolicy == CheckContentSecurityPolicy
-          ? WebContentSecurityPolicyDispositionCheck
-          : WebContentSecurityPolicyDispositionDoNotCheck;
   // Caching could be disabled for requests initiated by DevTools.
   // TODO(ananta)
   // We should extract the network cache state into a global component which