Remove redundant codepath for webgl api blocking

content/browser/gpu/gpu_process_host.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 "content/browser/gpu/gpu_process_host.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 476 matching lines @@
       UMA_HISTOGRAM_ENUMERATION("GPU.GPUProcessExitCode",
                                 exit_code,
                                 RESULT_CODE_LAST_CODE);
     }
 
     switch (status) {
       case base::TERMINATION_STATUS_NORMAL_TERMINATION:
         // Don't block offscreen contexts (and force page reload for webgl)
         // if this was an intentional shutdown or the OOM killer on Android
         // killed us while Chrome was in the background.
+// TODO(crbug.com/598400): Restrict this to Android for now, since other
+// platforms might fall through here for the 'exit_on_context_lost' workaround.
+#if defined(OS_ANDROID)
         block_offscreen_contexts = false;
+#endif
         message = "The GPU process exited normally. Everything is okay.";
         break;
       case base::TERMINATION_STATUS_ABNORMAL_TERMINATION:
         message = base::StringPrintf(
             "The GPU process exited with code %d.",
             exit_code);
         break;
       case base::TERMINATION_STATUS_PROCESS_WAS_KILLED:
         message = "You killed the GPU process! Why?";
         break;
@@ skipping 656 matching lines @@
   TRACE_EVENT0("gpu", "GpuProcessHost::OnCacheShader");
   ClientIdToShaderCacheMap::iterator iter =
       client_id_to_shader_cache_.find(client_id);
   // If the cache doesn't exist then this is an off the record profile.
   if (iter == client_id_to_shader_cache_.end())
     return;
   iter->second->Cache(GetShaderPrefixKey() + ":" + key, shader);
 }
 
 }  // namespace content