Handful of tweaks for tab dragging with touch:

chrome/browser/ui/views/tabs/tab_drag_controller_interactive_uitest_win.cc

 // Copyright (c) 2012 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/ui/views/tabs/tab_drag_controller_interactive_uitest.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/property_bag.h"
@@ skipping 47 matching lines @@
                   ui_controls::LEFT, ui_controls::UP));
   EXPECT_EQ("1 0", IDString(model));
   EXPECT_FALSE(TabDragController::IsActive());
   EXPECT_FALSE(tab_strip->IsDragSessionActive());
 }
 
 // Creates two browsers, drags from first into second.
 IN_PROC_BROWSER_TEST_F(TabDragControllerTest, DragToSeparateWindow) {
   TabStrip* tab_strip = GetTabStripForBrowser(browser());
 
+  // Add another tab to browser().
+  AddTabAndResetBrowser(browser());
+
   // Create another browser.
   Browser* browser2 = CreateAnotherWindowBrowserAndRelayout();
   TabStrip* tab_strip2 = GetTabStripForBrowser(browser2);
 
   // Move to the first tab and drag it enough so that it detaches, but not
   // enough that it attaches to browser2.
   gfx::Point tab_0_center(GetCenterInScreenCoordinates(tab_strip->tab_at(0)));
   ASSERT_TRUE(ui_test_utils::SendMouseMoveSync(tab_0_center));
   ASSERT_TRUE(ui_test_utils::SendMouseEventsSync(
                   ui_controls::LEFT, ui_controls::DOWN));
@@ skipping 177 matching lines @@
   ASSERT_FALSE(GetTabStripForBrowser(new_browser)->IsDragSessionActive());
   ASSERT_FALSE(TabDragController::IsActive());
 
   EXPECT_EQ("0", IDString(new_browser->tab_strip_model()));
 }
 
 // Creates two browsers, selects all tabs in first and drags into second.
 IN_PROC_BROWSER_TEST_F(TabDragControllerTest, DragAllToSeparateWindow) {
   TabStrip* tab_strip = GetTabStripForBrowser(browser());
 
+  // Add another tab to browser().
+  AddTabAndResetBrowser(browser());
+
   // Create another browser.
   Browser* browser2 = CreateAnotherWindowBrowserAndRelayout();
   TabStrip* tab_strip2 = GetTabStripForBrowser(browser2);
 
   browser()->tab_strip_model()->AddTabAtToSelection(0);
   browser()->tab_strip_model()->AddTabAtToSelection(1);
 
   // Move to the first tab and drag it enough so that it detaches, but not
   // enough that it attaches to browser2.
   gfx::Point tab_0_center(
@@ skipping 26 matching lines @@
   ASSERT_FALSE(TabDragController::IsActive());
   EXPECT_EQ("100 0 1", IDString(browser2->tab_strip_model()));
 }
 
 // Creates two browsers, selects all tabs in first, drags into second, then hits
 // escape.
 IN_PROC_BROWSER_TEST_F(TabDragControllerTest,
                        DragAllToSeparateWindowAndCancel) {
   TabStrip* tab_strip = GetTabStripForBrowser(browser());
 
+  // Add another tab to browser().
+  AddTabAndResetBrowser(browser());
+
   // Create another browser.
   Browser* browser2 = CreateAnotherWindowBrowserAndRelayout();
   TabStrip* tab_strip2 = GetTabStripForBrowser(browser2);
 
   browser()->tab_strip_model()->AddTabAtToSelection(0);
   browser()->tab_strip_model()->AddTabAtToSelection(1);
 
   // Move to the first tab and drag it enough so that it detaches, but not
   // enough that it attaches to browser2.
   gfx::Point tab_0_center(
@@ skipping 23 matching lines @@
   ASSERT_TRUE(ui_test_utils::SendKeyPressSync(
       browser2, ui::VKEY_ESCAPE, false, false, false, false));
 
   ASSERT_FALSE(tab_strip->IsDragSessionActive());
   ASSERT_FALSE(tab_strip2->IsDragSessionActive());
   ASSERT_FALSE(TabDragController::IsActive());
   ASSERT_EQ(2u, BrowserList::size());
   EXPECT_EQ("0 1", IDString(browser()->tab_strip_model()));
   EXPECT_EQ("100", IDString(browser2->tab_strip_model()));
 }