favor DCHECK_CURRENTLY_ON for better logs in content/browser/[f-p]*

content/browser/gpu/shader_disk_cache.cc

Index: content/browser/gpu/shader_disk_cache.cc
diff --git a/content/browser/gpu/shader_disk_cache.cc b/content/browser/gpu/shader_disk_cache.cc
index 24f07035bfe846f209a33766c9da81283f5362ad..64b167fe6a81ef9f52bec54f3bcf1d1f1ac1e36a 100644
--- a/content/browser/gpu/shader_disk_cache.cc
+++ b/content/browser/gpu/shader_disk_cache.cc
@@ -399,16 +399,16 @@ ShaderClearHelper::ShaderClearHelper(scoped_refptr<ShaderDiskCache> cache,
 }
 
 ShaderClearHelper::~ShaderClearHelper() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
 }
 
 void ShaderClearHelper::Clear() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
   DoClearShaderCache(net::OK);
 }
 
 void ShaderClearHelper::DoClearShaderCache(int rv) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
   // Hold a ref to ourselves so when we do the CacheCleared call we don't get
   // auto-deleted when our ref count drops to zero.
@@ -493,7 +493,7 @@ void ShaderCacheFactory::ClearByPath(const base::FilePath& path,
                                      const base::Time& delete_begin,
                                      const base::Time& delete_end,
                                      const base::Closure& callback) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
   DCHECK(!callback.is_null());
 
   scoped_refptr<ShaderClearHelper> helper = new ShaderClearHelper(
@@ -517,7 +517,7 @@ void ShaderCacheFactory::ClearByPath(const base::FilePath& path,
 }
 
 void ShaderCacheFactory::CacheCleared(const base::FilePath& path) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
   ShaderClearMap::iterator iter = shader_clear_map_.find(path);
   if (iter == shader_clear_map_.end()) {