WIP: Move 'X-Frame-Options' checking to the browser.

content/browser/frame_host/navigation_handle_impl.h

Index: content/browser/frame_host/navigation_handle_impl.h
diff --git a/content/browser/frame_host/navigation_handle_impl.h b/content/browser/frame_host/navigation_handle_impl.h
index 6026c4c099dc46117087c59808460fcf87a32941..04a9aa85fbf5fed45f06a35db6ca6e60c46d558a 100644
--- a/content/browser/frame_host/navigation_handle_impl.h
+++ b/content/browser/frame_host/navigation_handle_impl.h
@@ -78,6 +78,7 @@ class CONTENT_EXPORT NavigationHandleImpl : public NavigationHandle {
   bool HasUserGesture() override;
   ui::PageTransition GetPageTransition() override;
   bool IsExternalProtocol() override;
+  const net::HttpResponseHeaders* GetResponseHeaders() override;
   net::Error GetNetErrorCode() override;
   RenderFrameHostImpl* GetRenderFrameHost() override;
   bool IsSamePage() override;
@@ -102,12 +103,6 @@ class CONTENT_EXPORT NavigationHandleImpl : public NavigationHandle {
 
   NavigatorDelegate* GetDelegate() const;
 
-  // Returns the response headers for the request. This can only be accessed
-  // after a redirect was encountered or after the the navigation is ready to
-  // commit. It should not be modified, as modifications will not be reflected
-  // in the network stack.
-  const net::HttpResponseHeaders* GetResponseHeaders();
-
   void set_net_error_code(net::Error net_error_code) {
     net_error_code_ = net_error_code;
   }
@@ -159,6 +154,15 @@ class CONTENT_EXPORT NavigationHandleImpl : public NavigationHandle {
       scoped_refptr<net::HttpResponseHeaders> response_headers,
       const ThrottleChecksFinishedCallback& callback);
 
+  // Called when the URLRequest has response data, and is ready to be
+  // committed. |callback| will be called if the throttle checks indicate
+  // that the request should be cancelled. Otherwise, 'ReadyToCommitNavigation'
+  // will be called.
+  void WillProcessResponse(
+      RenderFrameHostImpl* render_frame_host,
+      scoped_refptr<net::HttpResponseHeaders> response_headers,
+      const ThrottleChecksFinishedCallback& callback);
+
   // Returns the FrameTreeNode this navigation is happening in.
   FrameTreeNode* frame_tree_node() { return frame_tree_node_; }
 
@@ -196,6 +200,7 @@ class CONTENT_EXPORT NavigationHandleImpl : public NavigationHandle {
 
   NavigationThrottle::ThrottleCheckResult CheckWillStartRequest();
   NavigationThrottle::ThrottleCheckResult CheckWillRedirectRequest();
+  NavigationThrottle::ThrottleCheckResult CheckWillProcessResponse();
 
   // Helper function to run and reset the |complete_callback_|. This marks the
   // end of a round of NavigationThrottleChecks.