Track where WebContents are created in order to better understand issue.

chrome/browser/extensions/webstore_install_with_prompt.cc

 // Copyright 2014 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/browser/extensions/webstore_install_with_prompt.h"
 
 #include "chrome/browser/extensions/webstore_installer.h"
 #include "chrome/browser/profiles/profile.h"
 #include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_source.h"
 
 using content::WebContents;
 
 namespace extensions {
 
 WebstoreInstallWithPrompt::WebstoreInstallWithPrompt(
     const std::string& webstore_item_id,
     Profile* profile,
     const Callback& callback)
     : WebstoreStandaloneInstaller(webstore_item_id, profile, callback),
       show_post_install_ui_(true),
       dummy_web_contents_(
           WebContents::Create(WebContents::CreateParams(profile))),
       parent_window_(NULL) {
+  WebContentsSource::CreateForWebContentsAndLocation(dummy_web_contents_.get(),
+                                                     FROM_HERE);
   set_install_source(WebstoreInstaller::INSTALL_SOURCE_OTHER);
 }
 
 WebstoreInstallWithPrompt::WebstoreInstallWithPrompt(
     const std::string& webstore_item_id,
     Profile* profile,
     gfx::NativeWindow parent_window,
     const Callback& callback)
     : WebstoreStandaloneInstaller(webstore_item_id, profile, callback),
       show_post_install_ui_(true),
       dummy_web_contents_(
           WebContents::Create(WebContents::CreateParams(profile))),
       parent_window_(parent_window) {
+  WebContentsSource::CreateForWebContentsAndLocation(dummy_web_contents_.get(),
+                                                     FROM_HERE);
   if (parent_window_)
     parent_window_tracker_ = NativeWindowTracker::Create(parent_window);
   set_install_source(WebstoreInstaller::INSTALL_SOURCE_OTHER);
 }
 
 WebstoreInstallWithPrompt::~WebstoreInstallWithPrompt() {
 }
 
 bool WebstoreInstallWithPrompt::CheckRequestorAlive() const {
   if (!parent_window_) {
@@ skipping 42 matching lines @@
 
 bool WebstoreInstallWithPrompt::CheckRequestorPermitted(
     const base::DictionaryValue& webstore_data,
     std::string* error) const {
   // Assume the requestor is trusted.
   *error = std::string();
   return true;
 }
 
 }  // namespace extensions