Native memory histograms for the browser.

content/renderer/dom_automation_controller.cc

Index: content/renderer/dom_automation_controller.cc
diff --git a/content/renderer/dom_automation_controller.cc b/content/renderer/dom_automation_controller.cc
index 6f4b27a6fadbc14d7ad39bdb7dd855501e2336d9..8c4847ccb0e34ec6bb59f7a2bc313cb4463367e3 100644
--- a/content/renderer/dom_automation_controller.cc
+++ b/content/renderer/dom_automation_controller.cc
@@ -10,6 +10,7 @@
 #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;
@@ -33,6 +34,9 @@ DomAutomationController::DomAutomationController()
   BindCallback("getHistogram",
                base::Bind(&DomAutomationController::GetHistogram,
                           base::Unretained(this)));
+  BindCallback("getBrowserHistogram",
+               base::Bind(&DomAutomationController::GetBrowserHistogram,
+                          base::Unretained(this)));
 }
 
 void DomAutomationController::Send(const CppArgumentList& args,
@@ -191,4 +195,23 @@ void DomAutomationController::GetHistogram(const CppArgumentList& args,
   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