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 1c65544982e749b10cb22f40a019ac4e800e5ef4..cbb84fa5ef198928d9a15df19cf5134a4d5fedfb 100644
--- a/content/public/browser/navigation_handle.h
+++ b/content/public/browser/navigation_handle.h
@@ -6,6 +6,7 @@
 #define CONTENT_PUBLIC_BROWSER_NAVIGATION_HANDLE_H_
 
 #include <memory>
+#include <string>
 
 #include "content/common/content_export.h"
 #include "content/public/browser/navigation_throttle.h"
@@ -20,6 +21,7 @@ class HttpResponseHeaders;
 }  // namespace net
 
 namespace content {
+struct GlobalRequestID;
 class NavigationData;
 class NavigationThrottle;
 class RenderFrameHost;
@@ -181,6 +183,12 @@ class CONTENT_EXPORT NavigationHandle {
   virtual void CancelDeferredNavigation(
       NavigationThrottle::ThrottleCheckResult result) = 0;
 
+  virtual bool HasNetworkResponseStarted() = 0;

[Charlie Reis, 2016/10/29 00:07:10]

nit: All methods in content/public should be documented.

Also, should these be in the "Parameters available at network request start
time" section rather than the "Navigation control flow" section?

[Not at Google. Contact bengr, 2016/11/01 21:11:06]

Done.

+
+  // This is valid after the network response has started. Returns the ID of the
+  // MAIN_FRAME URLRequest associated with this navigation.
+  virtual const GlobalRequestID& GetGlobalRequestID() = 0;
+
   // Testing methods ----------------------------------------------------------
   //
   // The following methods should be used exclusively for writing unit tests.