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..279d003e0354f0a9b1fea1571ef5d684a0873998 100644
--- a/chrome/browser/devtools/devtools_network_transaction.h
+++ b/chrome/browser/devtools/devtools_network_transaction.h
@@ -52,6 +52,12 @@ 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:
@@ -96,6 +102,10 @@ class DevToolsNetworkTransaction : public net::HttpTransaction {
   // 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.
@@ -109,6 +119,14 @@ 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,