views: Support longer tooltips.

ui/views/widget/tooltip_manager.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 "ui/views/widget/tooltip_manager.h"
 
 #include "ui/gfx/rect.h"
 #include "ui/gfx/screen.h"
 #include "ui/gfx/text_elider.h"
 
 namespace views {
 
-const size_t kMaxTooltipLength = 1024;
+const size_t kMaxTooltipLength = 2048;
 
 // static
 const char TooltipManager::kGroupingPropertyKey[] = "GroupingPropertyKey";
 
 // static
 int TooltipManager::GetMaxWidth(int x, int y, gfx::NativeView context) {
   return GetMaxWidth(gfx::Screen::GetScreenFor(context)->GetDisplayNearestPoint(
                          gfx::Point(x, y)));
 }
 
 // static
 int TooltipManager::GetMaxWidth(const gfx::Display& display) {
   return (display.bounds().width() + 1) / 2;
 }
 
 // static
 void TooltipManager::TrimTooltipText(base::string16* text) {
   // Clamp the tooltip length to kMaxTooltipLength so that we don't
   // accidentally DOS the user with a mega tooltip.
   *text = gfx::TruncateString(*text, kMaxTooltipLength);
 }
 
 }  // namespace views