clang/win: Enable -Wswitch.

content/browser/gpu/gpu_data_manager_impl_private.cc

 // Copyright (c) 2013 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_data_manager_impl_private.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
@@ skipping 81 matching lines @@
   int entry_index = static_cast<int>(sub_version) * kGpuFeatureNumStatus;
   switch (status) {
     case kGpuFeatureEnabled:
       break;
     case kGpuFeatureBlacklisted:
       entry_index++;
       break;
     case kGpuFeatureDisabled:
       entry_index += 2;
       break;
+    case kGpuFeatureNumStatus:
+      NOTREACHED();
+      break;
   }
   return entry_index;
 }
 #endif  // OS_WIN
 
 // Send UMA histograms about the enabled features and GPU properties.
 void UpdateStats(const gpu::GPUInfo& gpu_info,
                  const gpu::GpuBlacklist* blacklist,
                  const std::set<int>& blacklisted_features) {
   uint32 max_entry_id = blacklist->max_entry_id();
@@ skipping 1090 matching lines @@
   gpu_info_.context_info_state = gpu::kCollectInfoFatalFailure;
 #if defined(OS_WIN)
   gpu_info_.dx_diagnostics_info_state = gpu::kCollectInfoFatalFailure;
 #endif
   complete_gpu_info_already_requested_ = true;
   // Some observers might be waiting.
   NotifyGpuInfoUpdate();
 }
 
 }  // namespace content