Merge r22016 -- Force sizing of a new tab as soon as TabContents is created....

chrome/browser/browser.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/browser.h"
 
 #include "base/command_line.h"
 #include "base/idle_timer.h"
 #include "base/logging.h"
 #include "base/string_util.h"
@@ skipping 1380 matching lines @@
     PageTransition::Type transition, bool defer_load,
     SiteInstance* instance) const {
   // Create an appropriate tab contents.
   GURL real_url = url;
   TabContentsType type = TabContents::TypeForURL(&real_url);
   DCHECK(type != TAB_CONTENTS_UNKNOWN_TYPE);
 
   TabContents* contents = TabContents::CreateWithType(type, profile, instance);
   contents->SetupController(profile);
 
+  // Ensure that the new TabContentsView begins at the same size as the
+  // previous TabContentsView if it existed.  Otherwise, the initial WebKit
+  // layout will be performed based on a width of 0 pixels, causing a
+  // very long, narrow, inaccurate layout.  Because some scripts on pages (as
+  // well as WebKit's anchor link location calculation) are run on the initial
+  // layout and not recalculated later, we need to ensure the first layout is
+  // performed with sane view dimensions even when we're opening a new
+  // background tab.
+  if (TabContents* old_contents = tabstrip_model_.GetSelectedTabContents())
+    contents->view()->SizeContents(old_contents->view()->GetContainerSize());
+
   if (!defer_load) {
     // Load the initial URL before adding the new tab contents to the tab strip
     // so that the tab contents has navigation state.
     contents->controller()->LoadURL(url, referrer, transition);
   }
 
   return contents;
 }
 
 bool Browser::CanDuplicateContentsAt(int index) {
@@ skipping 1227 matching lines @@
 
   // We need to register the window position pref.
   std::wstring window_pref(prefs::kBrowserWindowPlacement);
   window_pref.append(L"_");
   window_pref.append(app_name);
   PrefService* prefs = g_browser_process->local_state();
   DCHECK(prefs);
 
   prefs->RegisterDictionaryPref(window_pref.c_str());
 }