Add base:: qualification to some CommandLine references in content.

content/common/gpu/gpu_memory_manager.cc

Index: content/common/gpu/gpu_memory_manager.cc
diff --git a/content/common/gpu/gpu_memory_manager.cc b/content/common/gpu/gpu_memory_manager.cc
index 9a233758f07c25235b40c77af515fb61ee9f86d2..045210aa8951b8ad3185ff6fc1f9708c29a0a8b1 100644
--- a/content/common/gpu/gpu_memory_manager.cc
+++ b/content/common/gpu/gpu_memory_manager.cc
@@ -62,11 +62,11 @@ GpuMemoryManager::~GpuMemoryManager() {
 void GpuMemoryManager::UpdateAvailableGpuMemory() {
   // If the value was overridden on the command line, use the specified value.
   static bool client_hard_limit_bytes_overridden =
-      CommandLine::ForCurrentProcess()->HasSwitch(
+      base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kForceGpuMemAvailableMb);
   if (client_hard_limit_bytes_overridden) {
     base::StringToUint64(
-        CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
+        base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
             switches::kForceGpuMemAvailableMb),
         &client_hard_limit_bytes_);
     client_hard_limit_bytes_ *= 1024 * 1024;