[NaCl SDK] A bunch of spelling fixes.

native_client_sdk/src/examples/fullscreen_tumbler/opengl_context.cc

 // Copyright (c) 2012 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 <pthread.h>
 
 #include "ppapi/c/pp_graphics_3d.h"
 #include "ppapi/cpp/completion_callback.h"
 #include "ppapi/gles2/gl2ext_ppapi.h"
 #include "opengl_context.h"
 
 namespace {
-// This is called by the brower when the 3D context has been flushed to the
+// This is called by the browser when the 3D context has been flushed to the
 // browser window.
 void FlushCallback(void* data, int32_t result) {
   static_cast<tumbler::OpenGLContext*>(data)->set_flush_pending(false);
 }
 }  // namespace
 
 namespace tumbler {
 
 OpenGLContext::OpenGLContext(pp::Instance* instance)
     : pp::Graphics3DClient(instance),
@@ skipping 52 matching lines @@
 void OpenGLContext::FlushContext() {
   if (flush_pending()) {
     // A flush is pending so do nothing; just drop this flush on the floor.
     return;
   }
   set_flush_pending(true);
   context_.SwapBuffers(pp::CompletionCallback(&FlushCallback, this));
 }
 }  // namespace tumbler