Move content's a plugin, ppapi_plugin, utility, and worker subdirectories to the content namespace.

content/ppapi_plugin/ppapi_webkitplatformsupport_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_PPAPI_PLUGIN_PPAPI_WEBKITPLATFORMSUPPORT_IMPL_H_
 #define CONTENT_PPAPI_PLUGIN_PPAPI_WEBKITPLATFORMSUPPORT_IMPL_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/common/webkitplatformsupport_impl.h"
 
-class PpapiWebKitPlatformSupportImpl :
-    public content::WebKitPlatformSupportImpl {
+namespace content {
+
+class PpapiWebKitPlatformSupportImpl : public WebKitPlatformSupportImpl {
  public:
   PpapiWebKitPlatformSupportImpl();
   virtual ~PpapiWebKitPlatformSupportImpl();
 
   // WebKitPlatformSupport methods:
   virtual WebKit::WebClipboard* clipboard();
   virtual WebKit::WebMimeRegistry* mimeRegistry();
   virtual WebKit::WebFileUtilities* fileUtilities();
   virtual WebKit::WebSandboxSupport* sandboxSupport();
   virtual bool sandboxEnabled();
@@ skipping 24 matching lines @@
   virtual int databaseDeleteFile(const WebKit::WebString& vfs_file_name,
                                  bool sync_dir);
 
  private:
   class SandboxSupport;
   scoped_ptr<SandboxSupport> sandbox_support_;
 
   DISALLOW_COPY_AND_ASSIGN(PpapiWebKitPlatformSupportImpl);
 };
 
+}  // namespace content
+
 #endif  // CONTENT_PPAPI_PLUGIN_PPAPI_WEBKITPLATFORMSUPPORT_IMPL_H_