Make Data Saver proxy bypass logic apply to redirects.

components/data_reduction_proxy/core/browser/data_reduction_proxy_interceptor.h

Index: components/data_reduction_proxy/core/browser/data_reduction_proxy_interceptor.h
diff --git a/components/data_reduction_proxy/core/browser/data_reduction_proxy_interceptor.h b/components/data_reduction_proxy/core/browser/data_reduction_proxy_interceptor.h
index f78c11e4c0bfaf6c4bb704cdf1ace2604e528708..0e248146a6a0ed383a997ed237d2c59b41387a13 100644
--- a/components/data_reduction_proxy/core/browser/data_reduction_proxy_interceptor.h
+++ b/components/data_reduction_proxy/core/browser/data_reduction_proxy_interceptor.h
@@ -15,7 +15,7 @@ class DataReductionProxyEventStore;
 class DataReductionProxyUsageStats;
 
 // Used to intercept responses that contain explicit and implicit signals
-// to bypass the data reduction proxy. If the proxy should be bypassed,
+// to bypass the Data Reduction Proxy. If the proxy should be bypassed,
 // the interceptor returns a new URLRequestHTTPJob that fetches the resource
 // without use of the proxy.
 class DataReductionProxyInterceptor : public net::URLRequestInterceptor {
@@ -34,15 +34,28 @@ class DataReductionProxyInterceptor : public net::URLRequestInterceptor {
       net::URLRequest* request,
       net::NetworkDelegate* network_delegate) const override;
 
-  // Returns a new URLRequestHTTPJob if the response indicates that the data
-  // reduction proxy should be bypassed according to the rules in |protocol_|.
-  // Returns NULL otherwise. If a job is returned, the interceptor's
-  // URLRequestInterceptingJobFactory will restart the request.
+  // Returns a new URLRequestHTTPJob if the redirect indicates that the Data
+  // Reduction Proxy should be bypassed. See |MaybeInterceptResponseOrRedirect|
+  // for more details.
+  net::URLRequestJob* MaybeInterceptRedirect(
+      net::URLRequest* request, net::NetworkDelegate* network_delegate,
+      const GURL& location) const override;
+
+  // Returns a new URLRequestHTTPJob if the response indicates that the Data
+  // Reduction Proxy should be bypassed. See |MaybeInterceptResponseOrRedirect|
+  // for more details.
   net::URLRequestJob* MaybeInterceptResponse(
       net::URLRequest* request,
       net::NetworkDelegate* network_delegate) const override;
 
  private:
+  // Returns a new URLRequestHTTPJob if the response or redirect indicates that
+  // the data reduction proxy should be bypassed according to the rules in
+  // |bypass_protocol_|. Returns NULL otherwise. If a job is returned, the
+  // interceptor's URLRequestInterceptingJobFactory will restart the request.
+  net::URLRequestJob* MaybeInterceptResponseOrRedirect(
+      net::URLRequest* request, net::NetworkDelegate* network_delegate) const;
+
   // Must outlive |this| if non-NULL.
   DataReductionProxyUsageStats* usage_stats_;