cpplint.py pass on cc/(base|debug|quads|resources)/

cc/resources/picture.h

 // Copyright 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 CC_RESOURCES_PICTURE_H_
 #define CC_RESOURCES_PICTURE_H_
 
 #include <list>
 #include <vector>
 
@@ skipping 42 matching lines @@
   void Raster(SkCanvas* canvas,
               gfx::Rect content_rect,
               float contents_scale,
               bool enable_lcd_text);
 
   void GatherPixelRefs(
       const gfx::Rect& layer_rect,
       std::list<skia::LazyPixelRef*>& pixel_ref_list);
 
  private:
-  Picture(gfx::Rect layer_rect);
+  explicit Picture(gfx::Rect layer_rect);
   // This constructor assumes SkPicture is already ref'd and transfers
   // ownership to this picture.
   Picture(const skia::RefPtr<SkPicture>&,
           gfx::Rect layer_rect,
           gfx::Rect opaque_rect);
   ~Picture();
 
   gfx::Rect layer_rect_;
   gfx::Rect opaque_rect_;
   skia::RefPtr<SkPicture> picture_;
 
   typedef std::vector<scoped_refptr<Picture> > PictureVector;
   PictureVector clones_;
 
   friend class base::RefCountedThreadSafe<Picture>;
   DISALLOW_COPY_AND_ASSIGN(Picture);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_PICTURE_H_