DevTools: merge devtools_http_handler into content - it is used in all the embedders anyways.

content/public/browser/devtools_manager_delegate.h

Index: content/public/browser/devtools_manager_delegate.h
diff --git a/content/public/browser/devtools_manager_delegate.h b/content/public/browser/devtools_manager_delegate.h
index 67c00260569e91e64ec8c1a87b3f3c243fcda4fc..c187a56070554d41d2a134a893b42167a6eb175f 100644
--- a/content/public/browser/devtools_manager_delegate.h
+++ b/content/public/browser/devtools_manager_delegate.h
@@ -42,6 +42,13 @@ class DevToolsManagerDelegate {
   virtual base::DictionaryValue* HandleCommand(
       DevToolsAgentHost* agent_host,
       base::DictionaryValue* command) = 0;
+
+  // Should return discovery page HTML that should list available tabs
+  // and provide attach links.
+  virtual std::string GetDiscoveryPageHTML() = 0;
+
+  // Returns frontend resource data by |path|.
+  virtual std::string GetFrontendResource(const std::string& path) = 0;
 };
 
 }  // namespace content