Upstream most of ios/web/net

ios/web/public/browser_state.h

Index: ios/web/public/browser_state.h
diff --git a/ios/web/public/browser_state.h b/ios/web/public/browser_state.h
index b4f2aded9754f0502e3cb795de46c7e2f5425fd5..44facddd093ddb9ece2b3e5ccb7b94a3017b987e 100644
--- a/ios/web/public/browser_state.h
+++ b/ios/web/public/browser_state.h
@@ -16,6 +16,7 @@ class URLRequestContextGetter;
 }
 
 namespace web {
+class CertificatePolicyCache;
 
 // This class holds the context needed for a browsing session.
 // It lives on the UI thread. All these methods must only be called on the UI
@@ -24,6 +25,10 @@ class BrowserState : public base::SupportsUserData {
  public:
   ~BrowserState() override;
 
+  // static
+  static scoped_refptr<CertificatePolicyCache> GetCertificatePolicyCache(
+      BrowserState* browser_state);
+
   // Returns whether this BrowserState is incognito. Default is false.
   virtual bool IsOffTheRecord() const = 0;