Make callers of CommandLine use it via the base:: namespace.

ui/compositor/compositor_switches.cc

Index: ui/compositor/compositor_switches.cc
diff --git a/ui/compositor/compositor_switches.cc b/ui/compositor/compositor_switches.cc
index a7ffc1465a0f9f2abc55e420857912ff931f6709..b041d885b938a53d11367a18b9f4e7c7f70636bb 100644
--- a/ui/compositor/compositor_switches.cc
+++ b/ui/compositor/compositor_switches.cc
@@ -28,13 +28,15 @@ const char kUIShowPaintRects[] = "ui-show-paint-rects";
 namespace ui {
 
 bool IsUIImplSidePaintingEnabled() {
-  const CommandLine& command_line = *CommandLine::ForCurrentProcess();
+  const base::CommandLine& command_line =
+      *base::CommandLine::ForCurrentProcess();
 
   return command_line.HasSwitch(switches::kUIEnableImplSidePainting);
 }
 
 bool IsUIZeroCopyEnabled() {
-  const CommandLine& command_line = *CommandLine::ForCurrentProcess();
+  const base::CommandLine& command_line =
+      *base::CommandLine::ForCurrentProcess();
 
   return command_line.HasSwitch(switches::kUIEnableZeroCopy);
 }