(Reland) Remove about:srcdoc url conversion.

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 668ba9b08fad4dbab5c84d944d862b25d27e1abb..f81a34fc2a1f0ac13f0d0533968c044808dc535b 100644
--- a/content/browser/frame_host/navigation_handle_impl.h
+++ b/content/browser/frame_host/navigation_handle_impl.h
@@ -82,7 +82,6 @@ class CONTENT_EXPORT NavigationHandleImpl : public NavigationHandle {
       FrameTreeNode* frame_tree_node,
       bool is_renderer_initiated,
       bool is_same_page,
-      bool is_srcdoc,
       const base::TimeTicks& navigation_start,
       int pending_nav_entry_id,
       NavigationGesture gesture,
@@ -95,7 +94,6 @@ class CONTENT_EXPORT NavigationHandleImpl : public NavigationHandle {
   bool IsInMainFrame() override;
   bool IsParentMainFrame() override;
   bool IsRendererInitiated() override;
-  bool IsSrcdoc() override;
   bool WasServerRedirect() override;
   int GetFrameTreeNodeId() override;
   int GetParentFrameTreeNodeId() override;
@@ -305,7 +303,6 @@ class CONTENT_EXPORT NavigationHandleImpl : public NavigationHandle {
                        FrameTreeNode* frame_tree_node,
                        bool is_renderer_initiated,
                        bool is_same_page,
-                       bool is_srcdoc,
                        const base::TimeTicks& navigation_start,
                        int pending_nav_entry_id,
                        NavigationGesture gesture,
@@ -349,7 +346,6 @@ class CONTENT_EXPORT NavigationHandleImpl : public NavigationHandle {
   RenderFrameHostImpl* render_frame_host_;
   const bool is_renderer_initiated_;
   const bool is_same_page_;
-  const bool is_srcdoc_;
   bool was_redirected_;
   scoped_refptr<net::HttpResponseHeaders> response_headers_;
   net::HttpResponseInfo::ConnectionInfo connection_info_;