ozone: evdev: Convert CHECKs to DCHECKs per style guide

ui/events/ozone/evdev/key_event_converter_evdev_unittest.cc

 // Copyright 2014 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 <linux/input.h>
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 14 matching lines @@
             base::FilePath(kTestDevicePath),
             modifiers,
             base::Bind(&MockKeyEventConverterEvdev::DispatchEventForTest,
                        base::Unretained(this))) {
     Start();
   }
   virtual ~MockKeyEventConverterEvdev() {};
 
   unsigned size() { return dispatched_events_.size(); }
   KeyEvent* event(unsigned index) {
-    CHECK_GT(dispatched_events_.size(), index);
+    DCHECK_GT(dispatched_events_.size(), index);
     return dispatched_events_[index];
   }
 
   void DispatchEventForTest(Event* event);
 
  private:
   ScopedVector<KeyEvent> dispatched_events_;
 
   DISALLOW_COPY_AND_ASSIGN(MockKeyEventConverterEvdev);
 };
@@ skipping 295 matching lines @@
   event = dev->event(4);
   EXPECT_EQ(ui::ET_KEY_PRESSED, event->type());
   EXPECT_EQ(ui::VKEY_CAPITAL, event->key_code());
   EXPECT_EQ(0, event->flags());
 
   event = dev->event(5);
   EXPECT_EQ(ui::ET_KEY_RELEASED, event->type());
   EXPECT_EQ(ui::VKEY_CAPITAL, event->key_code());
   EXPECT_EQ(0, event->flags());
 }