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

content/common/set_process_title_linux.h

Index: content/common/set_process_title_linux.h
===================================================================
--- content/common/set_process_title_linux.h	(revision 163359)
+++ content/common/set_process_title_linux.h	(working copy)
@@ -5,6 +5,7 @@
 #ifndef CONTENT_COMMON_SET_PROCESS_TITLE_LINUX_H_
 #define CONTENT_COMMON_SET_PROCESS_TITLE_LINUX_H_
 
+namespace content {
 // Set the process title that will show in "ps" and similar tools. Takes
 // printf-style format string and arguments. After calling setproctitle()
 // the original main() argv[] array should not be used. By default, the
@@ -13,10 +14,12 @@
 //
 // This signature and naming is to be compatible with most other Unix
 // implementations of setproctitle().
-void setproctitle(const char* fmt, ...);
+void SetProcTitle(const char* fmt, ...);
 
-// Initialize state needed for setproctitle() on Linux. Pass the argv pointer
-// from main() to setproctitle_init() before calling setproctitle().
-void setproctitle_init(const char** main_argv);
+// Initialize state needed for SetProcTitle() on Linux. Pass the argv pointer
+// from main() to SetProcTitleInit() before calling SetProcTitle().
+void SetProcTitleInit(const char** main_argv);
 
+}  // namespace content
+
 #endif  // CONTENT_COMMON_SET_PROCESS_TITLE_LINUX_H_