Move a bunch of content\common code into the content namespace.

content/renderer/paint_aggregator.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_PAINT_AGGREGATOR_H_
 #define CONTENT_RENDERER_PAINT_AGGREGATOR_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "content/common/content_export.h"
 #include "ui/gfx/rect.h"
 
+namespace content {
+
 // This class is responsible for aggregating multiple invalidation and scroll
 // commands to produce a scroll and repaint sequence.
 class CONTENT_EXPORT PaintAggregator {
  public:
   // This structure describes an aggregation of InvalidateRect and ScrollRect
   // calls.  If |scroll_rect| is non-empty, then that rect should be scrolled
   // by the amount specified by |scroll_delta|.  If |paint_rects| is non-empty,
   // then those rects should be repainted.  If |scroll_rect| and |paint_rects|
   // are non-empty, then scrolling should be performed before repainting.
   // |scroll_delta| can only specify scrolling in one direction (i.e., the x
@@ skipping 30 matching lines @@
 
  private:
   gfx::Rect ScrollPaintRect(const gfx::Rect& paint_rect, int dx, int dy) const;
   bool ShouldInvalidateScrollRect(const gfx::Rect& rect) const;
   void InvalidateScrollRect();
   void CombinePaintRects();
 
   PendingUpdate update_;
 };
 
+}  // namespace content
+
 #endif  // CONTENT_RENDERER_PAINT_AGGREGATOR_H_