Move platform_thread to base/threading and put in the base namespace. I left ...

base/waitable_event_unittest.cc

-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/time.h"
 #include "base/waitable_event.h"
-#include "base/platform_thread.h"
+#include "base/threading/platform_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::TimeDelta;
 using base::WaitableEvent;
 
 namespace {
 typedef testing::Test WaitableEventTest;
 }
 
 TEST(WaitableEventTest, ManualBasics) {
@@ skipping 49 matching lines @@
   ev[4]->Signal();
   EXPECT_EQ(WaitableEvent::WaitMany(ev, 5), 4u);
 
   ev[0]->Signal();
   EXPECT_EQ(WaitableEvent::WaitMany(ev, 5), 0u);
 
   for (unsigned i = 0; i < 5; ++i)
     delete ev[i];
 }
 
-class WaitableEventSignaler : public PlatformThread::Delegate {
+class WaitableEventSignaler : public base::PlatformThread::Delegate {
  public:
   WaitableEventSignaler(double seconds, WaitableEvent* ev)
       : seconds_(seconds),
         ev_(ev) {
   }
 
   void ThreadMain() {
-    PlatformThread::Sleep(static_cast<int>(seconds_ * 1000));
+    base::PlatformThread::Sleep(static_cast<int>(seconds_ * 1000));
     ev_->Signal();
   }
 
  private:
   const double seconds_;
   WaitableEvent *const ev_;
 };
 
 TEST(WaitableEventTest, WaitMany) {
   WaitableEvent* ev[5];
   for (unsigned i = 0; i < 5; ++i)
     ev[i] = new WaitableEvent(false, false);
 
   WaitableEventSignaler signaler(0.1, ev[2]);
-  PlatformThreadHandle thread;
-  PlatformThread::Create(0, &signaler, &thread);
+  base::PlatformThreadHandle thread;
+  base::PlatformThread::Create(0, &signaler, &thread);
 
   EXPECT_EQ(WaitableEvent::WaitMany(ev, 5), 2u);
 
-  PlatformThread::Join(thread);
+  base::PlatformThread::Join(thread);
 
   for (unsigned i = 0; i < 5; ++i)
     delete ev[i];
 }