Add missing (and remove superfluous) 'explicit' from constructors.

content/renderer/renderer_webcolorchooser_impl.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 CONTENT_RENDERER_RENDERER_WEBCOLORCHOOSER_IMPL_H_
 #define CONTENT_RENDERER_RENDERER_WEBCOLORCHOOSER_IMPL_H_
 
 #include "base/compiler_specific.h"
 #include "content/public/renderer/render_view_observer.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebColorChooser.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebColorChooserClient.h"
 #include "third_party/skia/include/core/SkColor.h"
 
 namespace WebKit {
 class WebFrame;
 }
 
 namespace content {
 class RenderViewImpl;
 
 class RendererWebColorChooserImpl : public WebKit::WebColorChooser,
                                     public RenderViewObserver {
  public:
-  explicit RendererWebColorChooserImpl(RenderViewImpl* sender,
-                                       WebKit::WebColorChooserClient*);
+  RendererWebColorChooserImpl(RenderViewImpl* sender,
+                              WebKit::WebColorChooserClient*);
   virtual ~RendererWebColorChooserImpl();
 
   virtual void setSelectedColor(const WebKit::WebColor);
   virtual void endChooser();
 
   void Open(SkColor initial_color);
 
   WebKit::WebColorChooserClient* client() { return client_; }
 
  private:
   // RenderViewObserver implementation.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   void OnDidChooseColorResponse(int color_chooser_id, SkColor color);
   void OnDidEndColorChooser(int color_chooser_id);
 
   int identifier_;
   WebKit::WebColorChooserClient* client_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererWebColorChooserImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDERER_WEBCOLORCHOOSER_IMPL_H_