DevTools: Enable network emulation on Service Workers

content/public/browser/devtools_agent_host.h

Index: content/public/browser/devtools_agent_host.h
diff --git a/content/public/browser/devtools_agent_host.h b/content/public/browser/devtools_agent_host.h
index 8f0705f962b078246d6d4f3231e66e4c526974d9..49feaf1d163989d917614b764b88ecfe8302e239 100644
--- a/content/public/browser/devtools_agent_host.h
+++ b/content/public/browser/devtools_agent_host.h
@@ -81,8 +81,8 @@ class CONTENT_EXPORT DevToolsAgentHost
   // Returns true if there is a client attached.
   virtual bool IsAttached() = 0;
 
-  // Sends a message to the agent.
-  virtual void DispatchProtocolMessage(const std::string& message) = 0;
+  // Sends a message to the agent. Returns true if the message is handled.
+  virtual bool DispatchProtocolMessage(const std::string& message) = 0;
 
   // Starts inspecting element at position (|x|, |y|) in the specified page.
   virtual void InspectElement(int x, int y) = 0;