Telemetry / Devtools TraceHandler: exposes tracing via dev tools.

content/browser/debugger/devtools_browser_target.cc

Index: content/browser/debugger/devtools_browser_target.cc
diff --git a/content/browser/debugger/devtools_browser_target.cc b/content/browser/debugger/devtools_browser_target.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a1267f6d34c97fd2b3f3d66a7429133a4b895649
--- /dev/null
+++ b/content/browser/debugger/devtools_browser_target.cc
@@ -0,0 +1,35 @@
+// 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.
+
+#include "content/browser/debugger/devtools_browser_target.h"
+
+namespace content {
+
+DevToolsBrowserTarget::DevToolsBrowserTarget(int connection_id)
+    : connection_id_(connection_id) {
+}
+
+DevToolsBrowserTarget::~DevToolsBrowserTarget() {
+}
+
+int DevToolsBrowserTarget::connection_id() const {

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

could live in .h

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

Done.

+  return connection_id_;
+}
+
+void DevToolsBrowserTarget::RegisterHandler(Handler* handler) {
+  handlers_.push_back(handler);

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

Make handlers a map? handlers_[handler->domain()] = handler;

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

Done.

+}
+
+void DevToolsBrowserTarget::OnWebSocketMessage(int connection_id,
+                                              const std::string& data,
+                                              DevToolsServerSender* sender) {
+  for (ScopedVector<Handler>::iterator handler = handlers_.begin();

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

// base::JSONReader::Read(data) into DictionaryValue, fetch "method", split by
".", lookup handler, pass parsed structure into the handler.

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

Done.

+       handler != handlers_.end(); ++handler) {
+    if ((*handler)->OnWebSocketMessage(connection_id, data, sender)) {

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

handler->OnProtocolCommand(const std::string& method, id, DictionaryValue*
params); See
https://developers.google.com/chrome-developer-tools/docs/protocol/1.0/page or
sniff the traffic for the message structure.

// Then you need to synchronously send back the ack containing request id.

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

Done.

+      break;
+    }
+  }
+}
+
+}  // namespace content