Move the remaning files in content\common to the content namespace.

content/browser/zygote_host/zygote_host_impl_linux.h

Index: content/browser/zygote_host/zygote_host_impl_linux.h
===================================================================
--- content/browser/zygote_host/zygote_host_impl_linux.h	(revision 163632)
+++ content/browser/zygote_host/zygote_host_impl_linux.h	(working copy)
@@ -17,7 +17,9 @@
 template<typename Type>
 struct DefaultSingletonTraits;
 
-class CONTENT_EXPORT ZygoteHostImpl : public content::ZygoteHost {
+namespace content {
+
+class CONTENT_EXPORT ZygoteHostImpl : public ZygoteHost {
  public:
   // Returns the singleton instance.
   static ZygoteHostImpl* GetInstance();
@@ -28,7 +30,7 @@
   // Returns its pid on success, otherwise
   // base::kNullProcessHandle;
   pid_t ForkRequest(const std::vector<std::string>& command_line,
-                    const std::vector<content::FileDescriptorInfo>& mapping,
+                    const std::vector<FileDescriptorInfo>& mapping,
                     const std::string& process_type);
   void EnsureProcessTerminated(pid_t process);
 
@@ -72,4 +74,6 @@
   int sandbox_status_;
 };
 
+}  // namespace content
+
 #endif  // CONTENT_BROWSER_ZYGOTE_HOST_ZYGOTE_HOST_IMPL_LINUX_H_