Change Panel titlebars to activate the panel on click (rather than minimize).

chrome/browser/ui/panels/panel_window_controller_cocoa.h

Index: chrome/browser/ui/panels/panel_window_controller_cocoa.h
diff --git a/chrome/browser/ui/panels/panel_window_controller_cocoa.h b/chrome/browser/ui/panels/panel_window_controller_cocoa.h
index eaca99eddfab285809959300017ace58d2481807..aff1f8c03b43481935b974293a7ca444d738d500 100644
--- a/chrome/browser/ui/panels/panel_window_controller_cocoa.h
+++ b/chrome/browser/ui/panels/panel_window_controller_cocoa.h
@@ -27,16 +27,6 @@ class PanelBrowserWindowCocoa;
 @class PanelTitlebarViewCocoa;
 
 @interface PanelWindowCocoaImpl : ChromeBrowserWindow {
-  // Panel windows use a higher priority NSWindowLevel to ensure they are always
-  // visible, causing the OS to prefer panel windows when selecting a window
-  // to make the key window. To counter this preference, we override
-  // -[NSWindow:canBecomeKeyWindow] to restrict when the panel can become the
-  // key window to a limited set of scenarios, such as when cycling through
-  // windows, when panels are the only remaining windows, when an event
-  // triggers window activation, etc. The panel may also be prevented from
-  // becoming the key window, regardless of the above scenarios, such as when
-  // a panel is minimized.
-  BOOL canBecomeKey_;  // Defaults to NO.
 }
 @end
 
@@ -153,10 +143,6 @@ class PanelBrowserWindowCocoa;
 // Turns on user-resizable corners/sides indications and enables live resize.
 - (void)enableResizeByMouse:(BOOL)enable;
 
-// In certain cases (when in a Docked strip for example) we want
-// the standard behavior of activating the app when clicking on the titlebar
-// to be disabled. This way, user can minimize the panel w/o activating it.
-- (BOOL)isActivationByClickingTitlebarEnabled;
 @end  // @interface PanelWindowController
 
 #endif  // CHROME_BROWSER_UI_PANELS_PANEL_WINDOW_CONTROLLER_COCOA_H_