Make Panel tests faster by reducing time intervals in tests.

chrome/browser/ui/panels/panel_manager.h

Index: chrome/browser/ui/panels/panel_manager.h
diff --git a/chrome/browser/ui/panels/panel_manager.h b/chrome/browser/ui/panels/panel_manager.h
index c36f8c7d592850b5d0e27f5d260e629cd2bd0d74..b744d509fe71f959a67ee31e79d3a19eb5d0fb8c 100644
--- a/chrome/browser/ui/panels/panel_manager.h
+++ b/chrome/browser/ui/panels/panel_manager.h
@@ -88,7 +88,20 @@ class PanelManager : public AutoHidingDesktopBar::Observer {
     return panel_overflow_strip_.get();
   }
 
+  // Reduces time interval in tests to shorten test run time.
+  // Wrapper should be used around all time intervals in panels code.
+  static inline double AdjustTimeInterval(double interval) {
+    if (shorten_time_intervals_)
+      return interval / 100.0;
+    else
+      return interval;
+  }
+
 #ifdef UNIT_TEST
+  static void shorten_time_intervals_for_testing() {
+    shorten_time_intervals_ = true;
+  }
+
   void set_auto_hiding_desktop_bar(
       AutoHidingDesktopBar* auto_hiding_desktop_bar) {
     auto_hiding_desktop_bar_ = auto_hiding_desktop_bar;
@@ -139,6 +152,9 @@ class PanelManager : public AutoHidingDesktopBar::Observer {
   // Tests may want to use a mock panel mouse watcher.
   void SetMouseWatcher(PanelMouseWatcher* watcher);
 
+  // Tests may want to shorten time intervals to reduce running time.
+  static bool shorten_time_intervals_;
+
   scoped_ptr<PanelStrip> panel_strip_;
   scoped_ptr<PanelOverflowStrip> panel_overflow_strip_;