DevTools: make network conditions emulation scoped (browser)

chrome/browser/devtools/devtools_network_transaction.h

Index: chrome/browser/devtools/devtools_network_transaction.h
diff --git a/chrome/browser/devtools/devtools_network_transaction.h b/chrome/browser/devtools/devtools_network_transaction.h
index 37e84ed8694b5ff4baab98b805cd8c3de0fa6506..77ae9217ee2c45b5735cdc95f6b972e5e9e925fd 100644
--- a/chrome/browser/devtools/devtools_network_transaction.h
+++ b/chrome/browser/devtools/devtools_network_transaction.h
@@ -6,6 +6,7 @@
 #define CHROME_BROWSER_DEVTOOLS_DEVTOOLS_NETWORK_TRANSACTION_H_
 
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "net/base/completion_callback.h"
 #include "net/base/load_states.h"
 #include "net/base/request_priority.h"
@@ -13,6 +14,7 @@
 #include "net/websockets/websocket_handshake_stream_base.h"
 
 class DevToolsNetworkController;
+class DevToolsNetworkInterceptor;
 class GURL;
 
 namespace net {
@@ -26,6 +28,10 @@ class IOBuffer;
 struct LoadTimingInfo;
 class UploadProgress;
 class X509Certificate;
+}  // namespace net
+
+namespace test {
+class DevToolsNetworkControllerHelper;
 }
 
 // DevToolsNetworkTransaction is a wrapper for network transaction. All
@@ -42,6 +48,11 @@ class DevToolsNetworkTransaction : public net::HttpTransaction {
   virtual ~DevToolsNetworkTransaction();
 
   const net::HttpRequestInfo* request() const { return request_; }
+
+  // Checks if request contains DevTools specific headers. Found values are
+  // remembered and corresponding keys are removed from headers.
+  void ProcessRequest();
+
   bool failed() const { return failed_; }
 
   // Runs callback (if any) with net::ERR_INTERNET_DISCONNECTED result value.
@@ -52,6 +63,12 @@ class DevToolsNetworkTransaction : public net::HttpTransaction {
     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:
@@ -92,11 +109,15 @@ class DevToolsNetworkTransaction : public net::HttpTransaction {
       const BeforeNetworkStartCallback& callback) OVERRIDE;
   virtual int ResumeNetworkStart() OVERRIDE;
 
+ protected:
+  friend class test::DevToolsNetworkControllerHelper;
+
  private:
   // Proxy callback handler. Runs saved callback.
   void OnCallback(int result);
 
   DevToolsNetworkController* controller_;
+  base::WeakPtr<DevToolsNetworkInterceptor> interceptor_;
 
   // Real network transaction.
   scoped_ptr<net::HttpTransaction> network_transaction_;
@@ -109,6 +130,14 @@ class DevToolsNetworkTransaction : public net::HttpTransaction {
   // 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,