DevTools: return discovered targets asynchronously.

content/browser/devtools/protocol/browser_handler.h

Index: content/browser/devtools/protocol/browser_handler.h
diff --git a/content/browser/devtools/protocol/browser_handler.h b/content/browser/devtools/protocol/browser_handler.h
index ee14bfd9177fbaf2b14e28d456f12c11a57bb580..6e44d0298b74f841d6d3930a9f053a1e31d28e34 100644
--- a/content/browser/devtools/protocol/browser_handler.h
+++ b/content/browser/devtools/protocol/browser_handler.h
@@ -7,6 +7,7 @@
 
 #include <stdint.h>
 
+#include "base/memory/weak_ptr.h"
 #include "content/browser/devtools/protocol/devtools_protocol_dispatcher.h"
 #include "content/public/browser/devtools_agent_host.h"
 
@@ -43,8 +44,9 @@ class BrowserHandler : public DevToolsAgentHostClient {
                         const std::string* context_id,
                         std::string* out_targetId);
   Response CloseTarget(const std::string& targetId, bool* out_success);
-  Response GetTargets(TargetInfos* infos);
-  Response Attach(const std::string& targetId);
+  Response GetTargets(DevToolsCommandId command_id);
+  Response Attach(DevToolsCommandId command_id,
+                  const std::string& targetId);

[dgozman, 2016/09/15 03:25:10]

target_id everywhere

   Response Detach(const std::string& targetId);
   Response SendMessage(const std::string& targetId, const std::string& message);
 
@@ -55,7 +57,15 @@ class BrowserHandler : public DevToolsAgentHostClient {
   void AgentHostClosed(DevToolsAgentHost* agent_host,
                        bool replaced_with_another_client) override;
 
+  void RespondToGetTargets(DevToolsCommandId command_id,
+                           DevToolsAgentHost::List list);
+  void RespondToAttach(DevToolsCommandId command_id,
+                       const std::string& targetId,
+                       DevToolsAgentHost::List agents);
+
   std::unique_ptr<Client> client_;
+  DevToolsAgentHost::List attached_hosts_;
+  base::WeakPtrFactory<BrowserHandler> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(BrowserHandler);
 };