Move more files into the content namespace.

content/browser/renderer_host/compositing_iosurface_mac.h

Index: content/browser/renderer_host/compositing_iosurface_mac.h
===================================================================
--- content/browser/renderer_host/compositing_iosurface_mac.h	(revision 147462)
+++ content/browser/renderer_host/compositing_iosurface_mac.h	(working copy)
@@ -15,6 +15,8 @@
 
 class IOSurfaceSupport;
 
+namespace content {
+
 // This class manages an OpenGL context and IOSurface for the accelerated
 // compositing code path. The GL context is attached to
 // RenderWidgetHostViewCocoa for blitting the IOSurface.
@@ -150,4 +152,6 @@
   bool is_vsync_disabled_;
 };
 
+}  // namespace content
+
 #endif  // CONTENT_BROWSER_RENDERER_HOST_ACCELERATED_COMPOSITING_VIEW_MAC_H