Switch to use net::FilterSourceStream from net::Filter

net/url_request/url_request_http_job.h

Index: net/url_request/url_request_http_job.h
diff --git a/net/url_request/url_request_http_job.h b/net/url_request/url_request_http_job.h
index f047e447742fd4dedb1c97fad786b978f615d630..7a78750764b531025d032eb06b177b655426a624 100644
--- a/net/url_request/url_request_http_job.h
+++ b/net/url_request/url_request_http_job.h
@@ -22,7 +22,7 @@
 #include "net/base/net_export.h"
 #include "net/base/sdch_manager.h"
 #include "net/cookies/cookie_store.h"
-#include "net/filter/filter.h"
+#include "net/filter/sdch_policy_delegate.h"
 #include "net/http/http_request_info.h"
 #include "net/socket/connection_attempts.h"
 #include "net/url_request/url_request_job.h"
@@ -60,6 +60,7 @@ class NET_EXPORT_PRIVATE URLRequestHttpJob : public URLRequestJob {
   void Start() override;
   void Kill() override;
   void GetConnectionAttempts(ConnectionAttempts* out) const override;
+  std::unique_ptr<SourceStream> SetUpSourceStream() override;
 
   RequestPriority priority() const {
     return priority_;
@@ -73,7 +74,7 @@ class NET_EXPORT_PRIVATE URLRequestHttpJob : public URLRequestJob {
 
   typedef base::RefCountedData<bool> SharedBoolean;
 
-  class HttpFilterContext;
+  class SdchContext;
 
   // Shadows URLRequestJob's version of this method so we can grab cookies.
   void NotifyHeadersComplete();
@@ -120,7 +121,6 @@ class NET_EXPORT_PRIVATE URLRequestHttpJob : public URLRequestJob {
   bool GetRemoteEndpoint(IPEndPoint* endpoint) const override;
   int GetResponseCode() const override;
   void PopulateNetErrorDetails(NetErrorDetails* details) const override;
-  std::unique_ptr<Filter> SetupFilter() const override;
   bool CopyFragmentOnRedirect(const GURL& location) const override;
   bool IsSafeRedirect(const GURL& location) override;
   bool NeedsAuth() override;
@@ -145,7 +145,8 @@ class NET_EXPORT_PRIVATE URLRequestHttpJob : public URLRequestJob {
   void ResetTimer();
 
   void UpdatePacketReadTimes() override;
-  void RecordPacketStats(FilterContext::StatisticSelector statistic) const;
+  void RecordPacketStats(
+      SdchPolicyDelegate::Context::StatisticSelector statistic) const;
 
   // Starts the transaction if extensions using the webrequest API do not
   // object.
@@ -240,7 +241,7 @@ class NET_EXPORT_PRIVATE URLRequestHttpJob : public URLRequestJob {
   // When the transaction finished reading the request headers.
   base::TimeTicks receive_headers_end_;
 
-  std::unique_ptr<HttpFilterContext> filter_context_;
+  std::unique_ptr<SdchPolicyDelegate> sdch_delegate_;
 
   CompletionCallback on_headers_received_callback_;