Randomly enable leak detector based on probability parameter

chrome/renderer/chrome_content_renderer_client.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 "chrome/renderer/chrome_content_renderer_client.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/command_line.h"
@@ skipping 423 matching lines @@
     WebSecurityPolicy::addOriginTrustworthyWhiteList(
         WebSecurityOrigin::create(origin));
   }
 
   std::set<std::string> schemes;
   GetSchemesBypassingSecureContextCheckWhitelist(&schemes);
   for (const std::string& scheme : schemes) {
     WebSecurityPolicy::addSchemeToBypassSecureContextWhitelist(
         WebString::fromUTF8(scheme));
   }
+
+#if defined(OS_CHROMEOS)
+  leak_detector_remote_client_.reset(new LeakDetectorRemoteClient());
+  thread->AddObserver(leak_detector_remote_client_.get());

[sadrul, 2016/08/08 20:20:06]

I was going to comment that there isn't a corresponding RemoveObserver, but
looks like that's the pattern for the rest of the observers added here (and
Remove isn't necessary right now either since the observer is destroyed only
when the thread itself is also destroyed).

+#endif
 }
 
 void ChromeContentRendererClient::RenderFrameCreated(
     content::RenderFrame* render_frame) {
   new ChromeRenderFrameObserver(render_frame);
 
   bool should_whitelist_for_content_settings =
       base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kInstantProcess);
   extensions::Dispatcher* ext_dispatcher = NULL;
@@ skipping 920 matching lines @@
 // chrome.system.network.getNetworkInterfaces provides the same
 // information. Also, the enforcement of sending and binding UDP is already done
 // by chrome extension permission model.
 bool ChromeContentRendererClient::ShouldEnforceWebRTCRoutingPreferences() {
 #if defined(ENABLE_EXTENSIONS)
   return !IsStandaloneExtensionProcess();
 #else
   return true;
 #endif
 }