Remove unnecessary explicit keyword in ExclusiveAccessBubble class

chrome/browser/ui/exclusive_access/exclusive_access_bubble.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_EXCLUSIVE_ACCESS_EXCLUSIVE_ACCESS_BUBBLE_H_
 #define CHROME_BROWSER_UI_EXCLUSIVE_ACCESS_EXCLUSIVE_ACCESS_BUBBLE_H_
 
 #include "base/macros.h"
 #include "base/timer/timer.h"
 #include "chrome/browser/ui/exclusive_access/exclusive_access_bubble_type.h"
@@ skipping 12 matching lines @@
 // state, namely fullscreen and mouse lock.
 //
 // Notification display design note: if the #simplified-fullscreen-ui flag is
 // enabled, the bubble has the following behaviour:
 // - The bubble is shown for kInitialDelayMs, then hides.
 // - After a bubble has been shown, notifications are suppressed for
 //   kSnoozeNotificationsTimeMs, to avoid bothering the user. After this time
 //   has elapsed, the next user input re-displays the bubble.
 class ExclusiveAccessBubble : public gfx::AnimationDelegate {
  public:
-  explicit ExclusiveAccessBubble(ExclusiveAccessManager* manager,
-                                 const GURL& url,
-                                 ExclusiveAccessBubbleType bubble_type);
+  ExclusiveAccessBubble(ExclusiveAccessManager* manager,
+                        const GURL& url,
+                        ExclusiveAccessBubbleType bubble_type);
   ~ExclusiveAccessBubble() override;
 
   // Informs the ExclusiveAccessBubble of some user input, which may update
   // internal timers and/or re-display the bubble.
   void OnUserInput();
 
  protected:
   static const int kPaddingPx;        // Amount of padding around the link
   static const int kInitialDelayMs;   // Initial time bubble remains onscreen
   static const int kIdleTimeMs;       // Time before mouse idle triggers hide
@@ skipping 91 matching lines @@
 
   // The most recently seen mouse position, in screen coordinates.  Used to see
   // if the mouse has moved since our last check. Only used in non-simplified
   // fullscreen mode.
   gfx::Point last_mouse_pos_;
 
   DISALLOW_COPY_AND_ASSIGN(ExclusiveAccessBubble);
 };
 
 #endif  // CHROME_BROWSER_UI_EXCLUSIVE_ACCESS_EXCLUSIVE_ACCESS_BUBBLE_H_