Native memory histograms for the browser.

content/renderer/dom_automation_controller.cc

 // 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/renderer/dom_automation_controller.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/statistics_recorder.h"
 #include "base/string_util.h"
+#include "content/common/child_process_messages.h"
 #include "content/common/view_messages.h"
 
 using webkit_glue::CppArgumentList;
 using webkit_glue::CppVariant;
 
 namespace content {
 
 DomAutomationController::DomAutomationController()
     : sender_(NULL),
       routing_id_(MSG_ROUTING_NONE),
       automation_id_(MSG_ROUTING_NONE) {
   BindCallback("send", base::Bind(&DomAutomationController::Send,
                                   base::Unretained(this)));
   BindCallback("setAutomationId",
                base::Bind(&DomAutomationController::SetAutomationId,
                           base::Unretained(this)));
   BindCallback("sendJSON", base::Bind(&DomAutomationController::SendJSON,
                                       base::Unretained(this)));
   BindCallback("sendWithId", base::Bind(&DomAutomationController::SendWithId,
                                         base::Unretained(this)));
   BindCallback("getHistogram",
                base::Bind(&DomAutomationController::GetHistogram,
                           base::Unretained(this)));
+  BindCallback("getBrowserHistogram",
+               base::Bind(&DomAutomationController::GetBrowserHistogram,
+                          base::Unretained(this)));
 }
 
 void DomAutomationController::Send(const CppArgumentList& args,
                                    CppVariant* result) {
   if (args.size() != 1) {
     result->SetNull();
     return;
   }
 
   if (automation_id_ == MSG_ROUTING_NONE) {
@@ skipping 138 matching lines @@
       base::StatisticsRecorder::FindHistogram(args[0].ToString());
   std::string output;
   if (!histogram) {
     output = "{}";
   } else {
     histogram->WriteJSON(&output);
   }
   result->Set(output);
 }
 
+void DomAutomationController::GetBrowserHistogram(const CppArgumentList& args,
+                                                  CppVariant* result) {
+  if (args.size() != 1) {
+    result->SetNull();
+    return;
+  }
+
+  if (!sender_) {
+    NOTREACHED();
+    result->SetNull();
+    return;
+  }
+
+  std::string histogram_json;
+  sender_->Send(new ChildProcessHostMsg_GetBrowserHistogram(
+      args[0].ToString(), &histogram_json));
+  result->Set(histogram_json);
+}
+
 }  // namespace content