Use base namespace for FilePath in content/browser

content/browser/renderer_host/render_process_host_impl.cc

Index: content/browser/renderer_host/render_process_host_impl.cc
diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
index e4ce7464c8c3c2174757ce5ef689a09d678c6e60..2a77ad3c4f72e3c3ec0d926fd3cee8b02e2ac417 100644
--- a/content/browser/renderer_host/render_process_host_impl.cc
+++ b/content/browser/renderer_host/render_process_host_impl.cc
@@ -402,7 +402,7 @@ bool RenderProcessHostImpl::Init() {
 
   // Find the renderer before creating the channel so if this fails early we
   // return without creating the channel.
-  FilePath renderer_path = ChildProcessHost::GetChildPath(flags);
+  base::FilePath renderer_path = ChildProcessHost::GetChildPath(flags);
   if (renderer_path.empty())
     return false;
 
@@ -463,7 +463,7 @@ bool RenderProcessHostImpl::Init() {
     // at this stage.
     child_process_launcher_.reset(new ChildProcessLauncher(
 #if defined(OS_WIN)
-        FilePath(),
+        base::FilePath(),
 #elif defined(OS_POSIX)
         renderer_prefix.empty(),
         base::EnvironmentVector(),