Revert of Expose GlobalRequestID in NavigationHandle and ResourceRequestInfo.

content/public/browser/navigation_handle.h

Index: content/public/browser/navigation_handle.h
diff --git a/content/public/browser/navigation_handle.h b/content/public/browser/navigation_handle.h
index 76a0cf7cb7259ac1f241d2a6c1cfac2ed91db715..b6ae5c7d0bdf999e8ea87b749888a5a40149e608 100644
--- a/content/public/browser/navigation_handle.h
+++ b/content/public/browser/navigation_handle.h
@@ -6,7 +6,6 @@
 #define CONTENT_PUBLIC_BROWSER_NAVIGATION_HANDLE_H_
 
 #include <memory>
-#include <string>
 
 #include "content/common/content_export.h"
 #include "content/public/browser/navigation_throttle.h"
@@ -22,7 +21,6 @@
 }  // namespace net
 
 namespace content {
-struct GlobalRequestID;
 class NavigationData;
 class NavigationThrottle;
 class RenderFrameHost;
@@ -185,14 +183,6 @@
   virtual void CancelDeferredNavigation(
       NavigationThrottle::ThrottleCheckResult result) = 0;
 
-  // Returns the ID of the URLRequest associated with this navigation. Can only
-  // be called from NavigationThrottle::WillProcessResponse and
-  // WebContentsObserver::ReadyToCommitNavigation.
-  // In the case of transfer navigations, this is the ID of the first request
-  // made. The transferred request's ID will not be tracked by the
-  // NavigationHandle.
-  virtual const GlobalRequestID& GetGlobalRequestID() = 0;
-
   // Testing methods ----------------------------------------------------------
   //
   // The following methods should be used exclusively for writing unit tests.