Telemetry / Devtools TraceHandler: exposes tracing via dev tools.

content/browser/debugger/devtools_browser_target.h

Index: content/browser/debugger/devtools_browser_target.h
diff --git a/content/browser/debugger/devtools_browser_target.h b/content/browser/debugger/devtools_browser_target.h
new file mode 100644
index 0000000000000000000000000000000000000000..be377a4b2e0fd2c06c1843f883c23b2eceae6b9c
--- /dev/null
+++ b/content/browser/debugger/devtools_browser_target.h
@@ -0,0 +1,46 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_BROWSER_DEBUGGER_DEVTOOLS_BROWSER_TARGET_H_
+#define CONTENT_BROWSER_DEBUGGER_DEVTOOLS_BROWSER_TARGET_H_
+
+#include "base/memory/scoped_vector.h"
+
+namespace content {
+
+class DevToolsServerSender;
+
+// This class bridges DevTools remote debugging server with the trace
+// infrastructure.
+class DevToolsBrowserTarget {
+ public:
+  class Handler {
+   public:
+    virtual bool OnWebSocketMessage(int connection_id,

[pfeldman, 2012/12/12 20:17:12]

Value* OnProtocolCommand(const std::string& method, const std::string& id, const
DictionaryValue* params)

[bulach, 2012/12/13 17:36:23]

Done.

+                                    const std::string& data,
+                                    DevToolsServerSender* sender) = 0;
+
+  };
+
+  explicit DevToolsBrowserTarget(int connection_id);
+  ~DevToolsBrowserTarget();
+
+  int connection_id() const;
+  void RegisterHandler(Handler* handler);

[pfeldman, 2012/12/12 20:17:12]

You should comment that it takes ownership.

[bulach, 2012/12/13 17:36:23]

Done.

+
+  void OnWebSocketMessage(int connection_id,
+                          const std::string& data,
+                          DevToolsServerSender* sender);
+
+ private:
+  const int connection_id_;
+
+  ScopedVector<Handler> handlers_;
+
+  DISALLOW_COPY_AND_ASSIGN(DevToolsBrowserTarget);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_DEBUGGER_DEVTOOLS_BROWSER_TARGET_H_