Added activity logging for ext APIs with custom bindings

chrome/renderer/extensions/api_activity_logger.cc

Index: chrome/renderer/extensions/api_activity_logger.cc
diff --git a/chrome/renderer/extensions/api_activity_logger.cc b/chrome/renderer/extensions/api_activity_logger.cc
new file mode 100644
index 0000000000000000000000000000000000000000..4af193615aa21a47ed1458e7795bd1657aa70013
--- /dev/null
+++ b/chrome/renderer/extensions/api_activity_logger.cc
@@ -0,0 +1,60 @@
+// Copyright (c) 2013 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 <string>
+#include "base/bind.h"
+#include "chrome/common/extensions/extension_messages.h"
+#include "chrome/renderer/chrome_render_process_observer.h"
+#include "chrome/renderer/extensions/api_activity_logger.h"
+#include "content/public/renderer/render_thread.h"
+#include "content/public/renderer/v8_value_converter.h"
+
+using content::V8ValueConverter;
+
+namespace extensions {
+
+APIActivityLogger::APIActivityLogger(
+    Dispatcher* dispatcher, v8::Handle<v8::Context> v8_context)
+    : ChromeV8Extension(dispatcher, v8_context) {
+  RouteFunction("LogActivity", base::Bind(&APIActivityLogger::LogActivity));
+}
+
+// static
+v8::Handle<v8::Value> APIActivityLogger::LogActivity(
+    const v8::Arguments& args) {
+  DCHECK_GT(args.Length(), 2);
+  DCHECK(args[0]->IsString());
+  DCHECK(args[1]->IsString());
+  DCHECK(args[2]->IsArray());
+
+  // Get the simple values.
+  std::string ext_id = *v8::String::AsciiValue(args[0]->ToString());
+  ExtensionHostMsg_APIAction_Params params;
+  params.api_call = *v8::String::AsciiValue(args[1]->ToString());
+  if (args.Length() == 4)  // Extras are optional.
+    params.extra = *v8::String::AsciiValue(args[3]->ToString());
+  else
+    params.extra = "";
+
+  // Get the array of api call arguments.
+  v8::Local<v8::Array> arg_array = v8::Local<v8::Array>::Cast(args[2]);
+  if (arg_array->Length() > 0) {
+    scoped_ptr<V8ValueConverter> converter(V8ValueConverter::create());
+    scoped_ptr<ListValue> arg_list(new ListValue());
+    for (int i = 0; i < static_cast<int>(arg_array->Length()); i++) {

[palmer, 2013/03/18 20:58:10]

No, just make |i| a size_t and drop the static_cast.

NIT: Also, Chromium style is pre-increment. 

[felt, 2013/03/18 23:34:19]

Done.

+      arg_list->Set(i,
+                    converter->FromV8Value(arg_array->Get(i),
+                    v8::Context::GetCurrent()));
+    }
+    params.arguments.Swap(arg_list.get());
+  }
+
+  content::RenderThread::Get()->Send(
+      new ExtensionHostMsg_AddAPIActionToActivityLog(ext_id, params));
+
+  return v8::Undefined();
+}
+
+}  // namespace extensions
+