Content tooltips should linger forever in aura.

content/browser/renderer_host/render_widget_host_view_aura.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 "content/browser/renderer_host/render_widget_host_view_aura.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 1086 matching lines @@
   // Beware, this function is not called on all destruction paths. It will
   // implicitly end up calling ~RenderWidgetHostViewAura though, so all
   // destruction/cleanup code should happen there, not here.
   in_shutdown_ = true;
   delete window_;
 }
 
 void RenderWidgetHostViewAura::SetTooltipText(const string16& tooltip_text) {
   tooltip_ = tooltip_text;
   aura::RootWindow* root_window = window_->GetRootWindow();
-  if (aura::client::GetTooltipClient(root_window))
-    aura::client::GetTooltipClient(root_window)->UpdateTooltip(window_);
+  aura::client::TooltipClient* tooltip_client =
+      aura::client::GetTooltipClient(root_window);
+  if (tooltip_client) {
+    tooltip_client->UpdateTooltip(window_);
+    // Content tooltips should be visible indefinitely.
+    tooltip_client->SetTooltipShownTimeout(window_, 0);
+  }
 }
 
 void RenderWidgetHostViewAura::SelectionChanged(const string16& text,
                                                 size_t offset,
                                                 const ui::Range& range) {
   RenderWidgetHostViewBase::SelectionChanged(text, offset, range);
 
 #if defined(USE_X11) && !defined(OS_CHROMEOS)
   if (text.empty() || range.is_empty())
     return;
@@ skipping 1837 matching lines @@
     RenderWidgetHost* widget) {
   return new RenderWidgetHostViewAura(widget);
 }
 
 // static
 void RenderWidgetHostViewPort::GetDefaultScreenInfo(WebScreenInfo* results) {
   GetScreenInfoForWindow(results, NULL);
 }
 
 }  // namespace content