This adds some plumbing for propagating the reason for a renderer's death

chrome/browser/renderer_host/test/web_cache_manager_browsertest.cc

 // Copyright (c) 2009 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/message_loop.h"
 #include "base/process_util.h"
 #include "chrome/browser/renderer_host/render_process_host.h"
 #include "chrome/browser/renderer_host/web_cache_manager.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 #include "chrome/browser/ui/browser.h"
+#include "chrome/common/result_codes.h"
 #include "chrome/test/in_process_browser_test.h"
 #include "chrome/test/ui_test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 class WebCacheManagerBrowserTest : public InProcessBrowserTest {
 };
 
 // Regression test for http://crbug.com/12362.  If a renderer crashes and the
 // user navigates to another tab and back, the browser doesn't crash.
 // Flaky, http://crbug.com/15288.
 IN_PROC_BROWSER_TEST_F(WebCacheManagerBrowserTest, FLAKY_CrashOnceOnly) {
   const FilePath kTestDir(FILE_PATH_LITERAL("google"));
   const FilePath kTestFile(FILE_PATH_LITERAL("google.html"));
   GURL url(ui_test_utils::GetTestUrl(kTestDir, kTestFile));
 
   ui_test_utils::NavigateToURL(browser(), url);
 
   browser()->NewTab();
   ui_test_utils::NavigateToURL(browser(), url);
 
   TabContents* tab = browser()->GetTabContentsAt(0);
   ASSERT_TRUE(tab != NULL);
   base::KillProcess(tab->GetRenderProcessHost()->GetHandle(),
-                    base::PROCESS_END_KILLED_BY_USER, true);
+                    ResultCodes::KILLED, true);
 
   browser()->SelectTabContentsAt(0, true);
   browser()->NewTab();
   ui_test_utils::NavigateToURL(browser(), url);
 
   browser()->SelectTabContentsAt(0, true);
   browser()->NewTab();
   ui_test_utils::NavigateToURL(browser(), url);
 
   // We would have crashed at the above line with the bug.
 
   browser()->SelectTabContentsAt(0, true);
   browser()->CloseTab();
   browser()->SelectTabContentsAt(0, true);
   browser()->CloseTab();
   browser()->SelectTabContentsAt(0, true);
   browser()->CloseTab();
 
   ui_test_utils::NavigateToURL(browser(), url);
 
   EXPECT_EQ(
       WebCacheManager::GetInstance()->active_renderers_.size(), 1U);
   EXPECT_EQ(
       WebCacheManager::GetInstance()->inactive_renderers_.size(), 0U);
   EXPECT_EQ(
       WebCacheManager::GetInstance()->stats_.size(), 1U);
 }