DevTools: remove devtools_discovery (merged into content).

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 e98f5dc9845f7e64082f82837d3821ee33e64dc7..6ec93f2c4e6c88959e409ceb32153e9d50522ec2 100644
--- a/content/public/browser/devtools_agent_host.h
+++ b/content/public/browser/devtools_agent_host.h
@@ -28,6 +28,7 @@ namespace content {
 
 class BrowserContext;
 class DevToolsExternalAgentProxyDelegate;
+class DevToolsManagerDelegate;
 class RenderFrameHost;
 class WebContents;
 
@@ -43,6 +44,10 @@ class CONTENT_EXPORT DevToolsAgentHost
   static char kTypeBrowser[];
   static char kTypeOther[];
 
+  // This is temporary while we are merging http handler and discovery
+  // into content/.
+  static DevToolsManagerDelegate* GetDevToolsManagerDelegate();
+
   // Latest DevTools protocol version supported.
   static std::string GetProtocolVersion();
 
@@ -92,11 +97,20 @@ class CONTENT_EXPORT DevToolsAgentHost
 
   static bool IsDebuggerAttached(WebContents* web_contents);
 
-  typedef std::vector<scoped_refptr<DevToolsAgentHost> > List;
+  using List = std::vector<scoped_refptr<DevToolsAgentHost>>;
+
+  using DiscoveryCallback = base::Callback<List()>;
 
-  // Returns all possible DevToolsAgentHosts.
+  // Registers embedder's custom host providers that are available via
+  // DiscoverAllHosts.
+  static void AddDiscoveryProvider(const DiscoveryCallback& callback);
+
+  // Returns all DevToolsAgentHosts content is aware of.
   static List GetOrCreateAll();
 
+  // Returns all possible DevToolsAgentHosts embedder is aware of.
+  static List DiscoverAllHosts();
+
   // Attaches |client| to this agent host to start debugging.
   // Returns true iff attach succeeded.
   virtual bool AttachClient(DevToolsAgentHostClient* client) = 0;