LevelDB: Removed global prefix from base namespace: "::base" -> "base"

third_party/leveldatabase/port/port_chromium.cc

Index: third_party/leveldatabase/port/port_chromium.cc
diff --git a/third_party/leveldatabase/port/port_chromium.cc b/third_party/leveldatabase/port/port_chromium.cc
index c76b4ef96154e0e2ad131e3e4af92041f1eae086..ef1e93abd17bf405385a96e78a75b07bfbfe27e4 100644
--- a/third_party/leveldatabase/port/port_chromium.cc
+++ b/third_party/leveldatabase/port/port_chromium.cc
@@ -51,24 +51,22 @@ void CondVar::SignalAll() {
 }
 
 void InitOnceImpl(OnceType* once, void (*initializer)()) {
-  OnceType state = ::base::subtle::Acquire_Load(once);
+  OnceType state = base::subtle::Acquire_Load(once);
   if (state == ONCE_STATE_DONE)
     return;
 
-  state = ::base::subtle::NoBarrier_CompareAndSwap(
-              once,
-              ONCE_STATE_UNINITIALIZED,
-              ONCE_STATE_EXECUTING_CLOSURE);
+  state = base::subtle::NoBarrier_CompareAndSwap(once, ONCE_STATE_UNINITIALIZED,
+                                                 ONCE_STATE_EXECUTING_CLOSURE);
 
   if (state == ONCE_STATE_UNINITIALIZED) {
     // We are the first thread, we have to call the closure.
     (*initializer)();
-    ::base::subtle::Release_Store(once, ONCE_STATE_DONE);
+    base::subtle::Release_Store(once, ONCE_STATE_DONE);
   } else {
     // Another thread is running the closure, wait until completion.
     while (state == ONCE_STATE_EXECUTING_CLOSURE) {
-      ::base::PlatformThread::YieldCurrentThread();
-      state = ::base::subtle::Acquire_Load(once);
+      base::PlatformThread::YieldCurrentThread();
+      state = base::subtle::Acquire_Load(once);
     }
   }
 }