DevTools: make network conditions emulation scoped (browser)

chrome/browser/devtools/devtools_network_transaction.h

 // Copyright 2014 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.
 
 #ifndef CHROME_BROWSER_DEVTOOLS_DEVTOOLS_NETWORK_TRANSACTION_H_
 #define CHROME_BROWSER_DEVTOOLS_DEVTOOLS_NETWORK_TRANSACTION_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "net/base/completion_callback.h"
 #include "net/base/load_states.h"
@@ skipping 34 matching lines @@
   bool failed() const { return failed_; }
 
   // Runs callback (if any) with net::ERR_INTERNET_DISCONNECTED result value.
   void Fail();
 
   int64_t throttled_byte_count() const { return throttled_byte_count_; }
   void DecreaseThrottledByteCount(int64_t delta) {
     throttled_byte_count_ -= delta;
   }
 
+  const std::string& request_initiator() const { return request_initiator_; }
+
+  const std::string& client_id() const {
+    return client_id_;
+  }
+
   void FireThrottledCallback();
 
   // HttpTransaction methods:
   virtual int Start(
       const net::HttpRequestInfo* request,
       const net::CompletionCallback& callback,
       const net::BoundNetLog& net_log) OVERRIDE;
   virtual int RestartIgnoringLastError(
       const net::CompletionCallback& callback) OVERRIDE;
   virtual int RestartWithCertificate(
@@ skipping 24 matching lines @@
   virtual void SetWebSocketHandshakeStreamCreateHelper(
       net::WebSocketHandshakeStreamBase::CreateHelper* create_helper) OVERRIDE;
   virtual void SetBeforeNetworkStartCallback(
       const BeforeNetworkStartCallback& callback) OVERRIDE;
   virtual int ResumeNetworkStart() OVERRIDE;
 
  private:
   // Proxy callback handler. Runs saved callback.
   void OnCallback(int result);
 
+  // Checks if request contains DevTools specific headers. Found values are
+  // remembered and corresponding keys are removed from headers.
+  void ProcessRequest();
+
   DevToolsNetworkController* controller_;
 
   // Real network transaction.
   scoped_ptr<net::HttpTransaction> network_transaction_;
 
   const net::HttpRequestInfo* request_;
 
   // True if Start was already invoked.
   bool started_;
 
   // True if Fail was already invoked.
   bool failed_;
 
+  // Value of "X-DevTools-Request-Initiator" request header.
+  std::string request_initiator_;
+
+  // Value of "X-DevTools-Emulate-Network-Conditions-Client-Id" request header.
+  std::string client_id_;
+
+  scoped_ptr<net::HttpRequestInfo> custom_request_;
+
   enum CallbackType {
       NONE,
       READ,
       RESTART_IGNORING_LAST_ERROR,
       RESTART_WITH_AUTH,
       RESTART_WITH_CERTIFICATE,
       START
   };
 
   int SetupCallback(
       net::CompletionCallback callback,
       int result,
       CallbackType callback_type);
 
   void Throttle(int result);
 
   int throttled_result_;
   int64_t throttled_byte_count_;
   CallbackType callback_type_;
   net::CompletionCallback proxy_callback_;
   net::CompletionCallback callback_;
 
   DISALLOW_COPY_AND_ASSIGN(DevToolsNetworkTransaction);
 };
 
 #endif  // CHROME_BROWSER_DEVTOOLS_DEVTOOLS_NETWORK_TRANSACTION_H_