Fixes for re-enabling more MSVC level 4 warnings: gpu/ edition

gpu/command_buffer/service/memory_program_cache.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 "gpu/command_buffer/service/memory_program_cache.h"
 
 #include "base/base64.h"
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/sha1.h"
 #include "base/strings/string_number_conversions.h"
 #include "gpu/command_buffer/common/constants.h"
 #include "gpu/command_buffer/service/disk_cache_proto.pb.h"
 #include "gpu/command_buffer/service/gl_utils.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 #include "gpu/command_buffer/service/gpu_switches.h"
 #include "gpu/command_buffer/service/shader_manager.h"
 #include "gpu/command_buffer/service/shader_translator.h"
 #include "ui/gl/gl_bindings.h"
 
 namespace {
 
 size_t GetCacheSizeBytes() {
-  size_t size;
   const CommandLine* command_line = CommandLine::ForCurrentProcess();
-  if (command_line->HasSwitch(switches::kGpuProgramCacheSizeKb) &&
-      base::StringToSizeT(command_line->GetSwitchValueNative(
-          switches::kGpuProgramCacheSizeKb),
-          &size)) {
+  if (command_line->HasSwitch(switches::kGpuProgramCacheSizeKb)) {
+    size_t size;
+    if (base::StringToSizeT(
+        command_line->GetSwitchValueNative(switches::kGpuProgramCacheSizeKb),
+        &size))
       return size * 1024;
   }
   return gpu::kDefaultMaxProgramCacheMemoryBytes;
 }
 
 }  // anonymous namespace
 
 namespace gpu {
 namespace gles2 {
 
@@ skipping 321 matching lines @@
   program_cache_->LinkedProgramCacheSuccess(program_hash);
 }
 
 MemoryProgramCache::ProgramCacheValue::~ProgramCacheValue() {
   program_cache_->curr_size_bytes_ -= length_;
   program_cache_->Evict(program_hash_);
 }
 
 }  // namespace gles2
 }  // namespace gpu