Change the way that gzipped resources are loaded from resources.pak

content/browser/webui/url_data_manager_backend.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/webui/url_data_manager_backend.h"
 
 #include <set>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 20 matching lines @@
 #include "content/browser/webui/shared_resources_data_source.h"
 #include "content/browser/webui/url_data_source_impl.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/resource_request_info.h"
 #include "content/public/common/url_constants.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
+#include "net/filter/filter.h"
 #include "net/http/http_response_headers.h"
 #include "net/http/http_status_code.h"
 #include "net/log/net_log_util.h"
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_error_job.h"
 #include "net/url_request/url_request_job.h"
 #include "net/url_request/url_request_job_factory.h"
 #include "url/url_util.h"
 
@@ skipping 67 matching lines @@
                       URLDataManagerBackend* backend,
                       bool is_incognito);
 
   // net::URLRequestJob implementation.
   void Start() override;
   void Kill() override;
   int ReadRawData(net::IOBuffer* buf, int buf_size) override;
   bool GetMimeType(std::string* mime_type) const override;
   int GetResponseCode() const override;
   void GetResponseInfo(net::HttpResponseInfo* info) override;
+  std::unique_ptr<net::Filter> SetupFilter() const override;
 
   // Used to notify that the requested data's |mime_type| is ready.
   void MimeTypeAvailable(const std::string& mime_type);
 
   // Called by ChromeURLDataManager to notify us that the data blob is ready
   // for us.
   void DataAvailable(base::RefCountedMemory* bytes);
 
   // Returns a weak pointer to the job.
   base::WeakPtr<URLRequestChromeJob> AsWeakPtr();
@@ skipping 40 matching lines @@
   }
 
   void set_send_content_type_header(bool send_content_type_header) {
     send_content_type_header_ = send_content_type_header;
   }
 
   void set_access_control_allow_origin(const std::string& value) {
     access_control_allow_origin_ = value;
   }
 
+  void set_is_gzipped(bool is_gzipped) {
+    is_gzipped_ = is_gzipped;
+  }
+
   // Returns true when job was generated from an incognito profile.
   bool is_incognito() const {
     return is_incognito_;
   }
 
  private:
   ~URLRequestChromeJob() override;
 
   // Helper for Start(), to let us start asynchronously.
   // (This pattern is shared by most net::URLRequestJob implementations.)
@@ skipping 42 matching lines @@
   // If true, sets the "Content-Type: <mime-type>" header.
   bool send_content_type_header_;
 
   // If not empty, "Access-Control-Allow-Origin:" is set to the value of this
   // string.
   std::string access_control_allow_origin_;
 
   // True when job is generated from an incognito profile.
   const bool is_incognito_;
 
+  // True when gzip encoding should be used. NOTE: this requires the original
+  // resources in resources.pak use compress="gzip".
+  bool is_gzipped_;
+
   // The backend is owned by net::URLRequestContext and always outlives us.
   URLDataManagerBackend* backend_;
 
   base::WeakPtrFactory<URLRequestChromeJob> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(URLRequestChromeJob);
 };
 
 URLRequestChromeJob::URLRequestChromeJob(net::URLRequest* request,
                                          net::NetworkDelegate* network_delegate,
@@ skipping 88 matching lines @@
         base::StringPrintf("%s:%s", net::HttpRequestHeaders::kContentType,
                            mime_type_.c_str());
     info->headers->AddHeader(content_type);
   }
 
   if (!access_control_allow_origin_.empty()) {
     info->headers->AddHeader("Access-Control-Allow-Origin: " +
                              access_control_allow_origin_);
     info->headers->AddHeader("Vary: Origin");
   }
+
+  if (is_gzipped_)
+    info->headers->AddHeader("Content-Encoding: gzip");
+}
+
+std::unique_ptr<net::Filter> URLRequestChromeJob::SetupFilter() const {
+  return is_gzipped_ ? net::Filter::GZipFactory() : nullptr;
 }
 
 void URLRequestChromeJob::MimeTypeAvailable(const std::string& mime_type) {
   set_mime_type(mime_type);
   NotifyHeadersComplete();
 }
 
 void URLRequestChromeJob::DataAvailable(base::RefCountedMemory* bytes) {
   TRACE_EVENT_ASYNC_END0("browser", "DataManager:Request", this);
   if (bytes) {
@@ skipping 260 matching lines @@
   job->set_content_security_policy_child_source(
       source->source()->GetContentSecurityPolicyChildSrc());
   job->set_content_security_policy_style_source(
       source->source()->GetContentSecurityPolicyStyleSrc());
   job->set_content_security_policy_image_source(
       source->source()->GetContentSecurityPolicyImgSrc());
   job->set_deny_xframe_options(
       source->source()->ShouldDenyXFrameOptions());
   job->set_send_content_type_header(
       source->source()->ShouldServeMimeTypeAsContentTypeHeader());
+  job->set_is_gzipped(source->source()->IsGzipped(path));
 
   std::string origin = GetOriginHeaderValue(request);
   if (!origin.empty()) {
     std::string header =
         source->source()->GetAccessControlAllowOriginForOrigin(origin);
     DCHECK(header.empty() || header == origin || header == "*" ||
            header == "null");
     job->set_access_control_allow_origin(header);
   }
 
@@ skipping 146 matching lines @@
 
 }  // namespace
 
 net::URLRequestJobFactory::ProtocolHandler*
 CreateDevToolsProtocolHandler(content::ResourceContext* resource_context,
                               bool is_incognito) {
   return new DevToolsJobFactory(resource_context, is_incognito);
 }
 
 }  // namespace content