[DevTools] Dispatch messages to V8InspectorSession directly.

content/renderer/devtools/devtools_agent_filter.cc

Index: content/renderer/devtools/devtools_agent_filter.cc
diff --git a/content/renderer/devtools/devtools_agent_filter.cc b/content/renderer/devtools/devtools_agent_filter.cc
index 0ccf71b20a47458479860616a1678efd4dab5eb1..1e015f7910ffdd17045d4c4dece74b0462e19a84 100644
--- a/content/renderer/devtools/devtools_agent_filter.cc
+++ b/content/renderer/devtools/devtools_agent_filter.cc
@@ -21,8 +21,12 @@ namespace {
 
 class MessageImpl : public WebDevToolsAgent::MessageDescriptor {
  public:
-  MessageImpl(const std::string& message, int routing_id)
-      : msg_(message),
+  MessageImpl(
+      const std::string& method,
+      const std::string& message,
+      int routing_id)
+      : method_(method),
+        msg_(message),
         routing_id_(routing_id) {
   }
   ~MessageImpl() override {}
@@ -33,8 +37,10 @@ class MessageImpl : public WebDevToolsAgent::MessageDescriptor {
     return agent->GetWebAgent();
   }
   WebString message() override { return WebString::fromUTF8(msg_); }
+  WebString method() override { return WebString::fromUTF8(method_); }
 
  private:
+  std::string method_;
   std::string msg_;
   int routing_id_;
 };
@@ -72,7 +78,7 @@ void DevToolsAgentFilter::OnDispatchOnInspectorBackend(
   if (WebDevToolsAgent::shouldInterruptForMethod(
           WebString::fromUTF8(method))) {
     WebDevToolsAgent::interruptAndDispatch(
-        session_id, new MessageImpl(message, current_routing_id_));
+        session_id, new MessageImpl(method, message, current_routing_id_));
   }
 }