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

content/browser/renderer_host/render_sandbox_host_linux.cc

Index: content/browser/renderer_host/render_sandbox_host_linux.cc
===================================================================
--- content/browser/renderer_host/render_sandbox_host_linux.cc	(revision 163632)
+++ content/browser/renderer_host/render_sandbox_host_linux.cc	(working copy)
@@ -36,11 +36,12 @@
 #include "third_party/WebKit/Source/WebKit/chromium/public/linux/WebFontInfo.h"
 #include "ui/gfx/font_render_params_linux.h"
 
-using content::LinuxSandbox;
 using WebKit::WebCString;
 using WebKit::WebFontInfo;
 using WebKit::WebUChar;
 
+namespace content {
+
 // http://code.google.com/p/chromium/wiki/LinuxSandboxIPC
 
 // BEWARE: code in this file run across *processes* (not just threads).
@@ -668,7 +669,7 @@
   const int browser_socket_;
   scoped_ptr<FontConfigDirect> font_config_;
   std::vector<std::string> sandbox_cmd_;
-  scoped_ptr<content::WebKitPlatformSupportImpl> webkit_platform_support_;
+  scoped_ptr<WebKitPlatformSupportImpl> webkit_platform_support_;
 };
 
 SandboxIPCProcess::~SandboxIPCProcess() {
@@ -679,7 +680,7 @@
 void SandboxIPCProcess::EnsureWebKitInitialized() {
   if (webkit_platform_support_.get())
     return;
-  webkit_platform_support_.reset(new content::WebKitPlatformSupportImpl);
+  webkit_platform_support_.reset(new WebKitPlatformSupportImpl);
   WebKit::initializeWithoutV8(webkit_platform_support_.get());
 }
 
@@ -747,3 +748,5 @@
       PLOG(ERROR) << "close";
   }
 }
+
+}  // namespace content