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 c9150ae697c602c6a70f57b527d34fcf30a2d891..df351a3d9afce594eea414ebe320f01c9e631dec 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"
@@ -50,7 +50,7 @@ class NET_EXPORT_PRIVATE URLRequestHttpJob : public URLRequestJob {
 
   // Record Sdch specific packet stats. Public so that SdchPolicyDelegate can
   // access it.
-  void RecordPacketStats(FilterContext::StatisticSelector statistic) const;
+  void RecordPacketStats(SdchPolicyDelegate::StatisticSelector statistic) const;
 
  protected:
   URLRequestHttpJob(URLRequest* request,
@@ -64,6 +64,7 @@ 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_;
@@ -77,7 +78,7 @@ 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();
@@ -124,7 +125,6 @@ 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;
@@ -243,8 +243,6 @@ 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_;
-
   CompletionCallback on_headers_received_callback_;
 
   // We allow the network delegate to modify a copy of the response headers.