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

content/renderer/content_security_policy_util.h

Index: content/renderer/content_security_policy_util.h
diff --git a/content/renderer/content_security_policy_util.h b/content/renderer/content_security_policy_util.h
index 03fc62ce7ef4ea7c2f55614e2b288753638401ce..30858d85dd20fd9818e16ec2ae795a1c490d7e0a 100644
--- a/content/renderer/content_security_policy_util.h
+++ b/content/renderer/content_security_policy_util.h
@@ -6,22 +6,17 @@
 #define CONTENT_RENDERER_CONTENT_SECURITY_POLICY_UTIL_H_
 
 #include "content/common/content_security_policy/content_security_policy.h"
-#include "content/common/content_security_policy/csp_context.h"
-#include "third_party/WebKit/public/platform/WebContentSecurityPolicyStruct.h"
+
+namespace blink {
+struct WebContentSecurityPolicyPolicy;
+}  // namespace blink
 
 namespace content {
 
-// Convert a WebContentSecurityPolicy into a ContentSecurityPolicy. These two
-// classes represent the exact same thing, but one is in content, the other is
-// in blink.
+// Convert a WebContentSecurityPolicy into a ContentSecurityPolicy, these two
+// classes are the reflection of each other. One in content, the other in blink.
 ContentSecurityPolicy BuildContentSecurityPolicy(
     const blink::WebContentSecurityPolicyPolicy&);
-
-// Convert a CSPViolationParams into a WebContentSecurityPolicyViolation. These
-// two classes represent the exact same thing, but one is in content, the other
-// is in blink.
-blink::WebContentSecurityPolicyViolation BuildWebContentSecurityPolicyViolation(
-    const content::CSPViolationParams& violation_params);
 
 }  // namespace content