Handful of tweaks for tab dragging with touch:

chrome/browser/ui/views/tabs/tab_drag_controller.h

Index: chrome/browser/ui/views/tabs/tab_drag_controller.h
diff --git a/chrome/browser/ui/views/tabs/tab_drag_controller.h b/chrome/browser/ui/views/tabs/tab_drag_controller.h
index 029ef33e54db79bb752e79aa44e5728957fd903b..dd9f68dc2789890ea6ecff5df6290b9bb7c44b8b 100644
--- a/chrome/browser/ui/views/tabs/tab_drag_controller.h
+++ b/chrome/browser/ui/views/tabs/tab_drag_controller.h
@@ -68,6 +68,10 @@ class TabDragController : public content::WebContentsDelegate,
     REORDER
   };
 
+  // Amount above or below the tabstrip the user has to drag before detaching.
+  static const int kTouchVerticalDetachMagnetism;
+  static const int kVerticalDetachMagnetism;
+
   TabDragController();
   virtual ~TabDragController();
 
@@ -291,9 +295,9 @@ class TabDragController : public content::WebContentsDelegate,
   // or isn't compatible.
   TabStrip* GetTabStripForWindow(gfx::NativeWindow window);
 
-  // Returns the compatible TabStrip that is under the specified point (screen
+  // Returns the compatible TabStrip to drag to at the specified point (screen
   // coordinates), or NULL if there is none.
-  TabStrip* GetTabStripForPoint(const gfx::Point& point_in_screen);
+  TabStrip* GetTargetTabStripForPoint(const gfx::Point& point_in_screen);
 
   // Returns true if |tabstrip| contains the specified point in screen
   // coordinates.