Don't waste time on browser that crashed before connecting to the IPC channel.

chrome/test/automation/proxy_launcher.cc

 // Copyright (c) 2011 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/test/automation/proxy_launcher.h"
 
 #include "base/environment.h"
 #include "base/file_util.h"
 #include "base/string_number_conversions.h"
 #include "base/string_split.h"
@@ skipping 200 matching lines @@
 #if !defined(OS_MACOSX)
 bool ProxyLauncher::LaunchAnotherBrowserBlockUntilClosed(
     const LaunchState& state) {
   return LaunchBrowserHelper(state, false, true, NULL);
 }
 #endif
 
 void ProxyLauncher::QuitBrowser() {
   // If we have already finished waiting for the browser to exit
   // (or it hasn't launched at all), there's nothing to do here.
-  if (process_ == base::kNullProcessHandle)
+  if (process_ == base::kNullProcessHandle || !automation_proxy_.get())
     return;
 
   if (SESSION_ENDING == shutdown_type_) {
     TerminateBrowser();
     return;
   }
 
   base::TimeTicks quit_start = base::TimeTicks::Now();
 
   EXPECT_TRUE(automation()->SetFilteredInet(false));
@@ skipping 49 matching lines @@
   EXPECT_TRUE(WaitForBrowserProcessToQuit(
                   TestTimeouts::action_max_timeout_ms(), &exit_code));
   EXPECT_EQ(0, exit_code);  // Expect a clean shutdown.
 
   browser_quit_time_ = base::TimeTicks::Now() - quit_start;
 }
 
 void ProxyLauncher::TerminateBrowser() {
   // If we have already finished waiting for the browser to exit
   // (or it hasn't launched at all), there's nothing to do here.
-  if (process_ == base::kNullProcessHandle)
+  if (process_ == base::kNullProcessHandle || !automation_proxy_.get())
     return;
 
   base::TimeTicks quit_start = base::TimeTicks::Now();
 
   EXPECT_TRUE(automation()->SetFilteredInet(false));
 #if defined(OS_WIN)
   scoped_refptr<BrowserProxy> browser(automation()->GetBrowserWindow(0));
   ASSERT_TRUE(browser.get());
   ASSERT_TRUE(browser->TerminateSession());
 #endif  // defined(OS_WIN)
@@ skipping 296 matching lines @@
   return LaunchBrowserAndServer(state, wait_for_initial_loads);
 }
 
 void AnonymousProxyLauncher::TerminateConnection() {
   CloseBrowserAndServer();
 }
 
 std::string AnonymousProxyLauncher::PrefixedChannelID() const {
   return channel_id_;
 }