[DevTools] Remove Browser domain, switch clients to Target.

content/browser/devtools/protocol/target_handler.h

Index: content/browser/devtools/protocol/target_handler.h
diff --git a/content/browser/devtools/protocol/target_handler.h b/content/browser/devtools/protocol/target_handler.h
index 3c719a14c7decd23587ab881f144a86d978c481d..c37c60228491b3b525e5a44af17cc45ec3ab7089 100644
--- a/content/browser/devtools/protocol/target_handler.h
+++ b/content/browser/devtools/protocol/target_handler.h
@@ -49,6 +49,16 @@ class TargetHandler : public DevToolsAgentHostClient,
   Response GetTargetInfo(const std::string& target_id,
                          scoped_refptr<TargetInfo>* target_info);
   Response ActivateTarget(const std::string& target_id);
+  Response CloseTarget(const std::string& target_id, bool* out_success);
+  Response CreateBrowserContext(std::string* out_context_id);
+  Response DisposeBrowserContext(const std::string& context_id,
+                                 bool* out_success);
+  Response CreateTarget(const std::string& url,
+                        const int* width,
+                        const int* height,
+                        const std::string* context_id,
+                        std::string* out_target_id);
+  Response GetTargets(std::vector<scoped_refptr<TargetInfo>>* target_infos);
 
  private:
   using HostsMap = std::map<std::string, scoped_refptr<DevToolsAgentHost>>;