Set max disk cache size correctly.

content/browser/gpu/shader_disk_cache.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/shader_disk_cache.h"
 
 #include "base/threading/thread_checker.h"
 #include "content/browser/gpu/gpu_process_host.h"
 #include "content/public/browser/browser_thread.h"
+#include "gpu/command_buffer/common/constants.h"
 #include "net/base/cache_type.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
 
 namespace content {
 
 namespace {
 
 static const base::FilePath::CharType kGpuCachePath[] =
     FILE_PATH_LITERAL("GPUCache");
@@ skipping 475 matching lines @@
   if (!iter->second.empty()) {
     iter->second.front()->Clear();
     return;
   }
 
   shader_clear_map_.erase(path);
 }
 
 ShaderDiskCache::ShaderDiskCache(const base::FilePath& cache_path)
     : cache_available_(false),
-      max_cache_size_(0),
       host_id_(0),
       cache_path_(cache_path),
       is_initialized_(false),
       backend_(NULL) {
   ShaderCacheFactory::GetInstance()->AddToCache(cache_path_, this);
 }
 
 ShaderDiskCache::~ShaderDiskCache() {
   ShaderCacheFactory::GetInstance()->RemoveFromCache(cache_path_);
   if (backend_)
     delete backend_;
 }
 
 void ShaderDiskCache::Init() {
   if (is_initialized_) {
     NOTREACHED();  // can't initialize disk cache twice.
     return;
   }
   is_initialized_ = true;
 
   int rv = disk_cache::CreateCacheBackend(
       net::SHADER_CACHE,
       net::CACHE_BACKEND_BLOCKFILE,
       cache_path_.Append(kGpuCachePath),
-      max_cache_size_,
+      gpu::kDefaultMaxProgramCacheMemoryBytes,
       true,
       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::CACHE).get(),
       NULL,
       &backend_,
       base::Bind(&ShaderDiskCache::CacheCreatedCallback, this));
 
   if (rv == net::OK)
     cache_available_ = true;
 }
 
@@ skipping 68 matching lines @@
     const net::CompletionCallback& callback) {
   if (entry_map_.empty()) {
     return net::OK;
   }
   cache_complete_callback_ = callback;
   return net::ERR_IO_PENDING;
 }
 
 }  // namespace content