Merge 21573 - A crasher from the field indicates that the focus manager can b...

chrome/browser/views/find_bar_win.cc

 // Copyright (c) 2006-2009 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 "chrome/browser/views/find_bar_win.h"
 
 #include "app/slide_animation.h"
 #include "chrome/browser/browser.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/find_bar_controller.h"
@@ skipping 84 matching lines @@
 
   // Initialize the host.
   host_.reset(new Host(this));
   host_->Init(browser_view->GetWidget()->GetNativeView(), gfx::Rect());
   host_->SetContentsView(view_);
 
   // Start listening to focus changes, so we can register and unregister our
   // own handler for Escape.
   focus_manager_ =
       views::FocusManager::GetFocusManagerForNativeView(host_->GetNativeView());
-  focus_manager_->AddFocusChangeListener(this);
+  if (focus_manager_) {
+    focus_manager_->AddFocusChangeListener(this);
 
-  // Stores the currently focused view, and tracks focus changes so that we can
-  // restore focus when the find box is closed.
-  focus_tracker_.reset(new views::ExternalFocusTracker(view_, focus_manager_));
+    // Stores the currently focused view, and tracks focus changes so that we
+    // can restore focus when the find box is closed.
+    focus_tracker_.reset(new views::ExternalFocusTracker(view_,
+                                                         focus_manager_));
+  } else {
+    // In some cases (see bug http://crbug.com/17056) it seems we may not have
+    // a focus manager.  Please reopen the bug if you hit this.
+    NOTREACHED();
+  }
 
   // Start the process of animating the opening of the window.
   animation_.reset(new SlideAnimation(this));
 }
 
 FindBarWin::~FindBarWin() {
 }
 
 // TODO(brettw) this should not be so complicated. The view should really be in
 // charge of these regions. CustomFrameWindow will do this for us. It will also
@@ skipping 493 matching lines @@
     focus_tracker_.reset(NULL);
 }
 
 void FindBarWin::AudibleAlert() {
 #if defined(OS_WIN)
   MessageBeep(MB_OK);
 #else
   NOTIMPLEMENTED();
 #endif
 }