Move response_data_file from ResourceResponseHead to webkit_glue::ResponseInfo

We would like to use the entry response_data_file in ResourceResponseHead
(currently in chrome/browser/resource_handler.h) in chrome/renderer. So refactor the
member and move it to webkit_glue::ResourceLoaderBridge::ResponsseInfo which
is the base class of ResourceResponseHead.

Review URL: http://codereview.chromium.org/42199

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@11810 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 25 insertions, 0 deletions

diff --git a/webkit/glue/resource_loader_bridge.cc b/webkit/glue/resource_loader_bridge.cc
index 5b29fb0..266b518 100644
--- a/webkit/glue/resource_loader_bridge.cc
+++ b/webkit/glue/resource_loader_bridge.cc
@@ -12,6 +12,12 @@
 namespace webkit_glue {
 
 ResourceLoaderBridge::ResponseInfo::ResponseInfo() {
+#if defined(OS_WIN)
+  response_data_file = base::kInvalidPlatformFileValue;
+#elif defined(OS_POSIX)
+  response_data_file.fd = base::kInvalidPlatformFileValue;
+  response_data_file.auto_close = false;
+#endif
 }
 
 ResourceLoaderBridge::ResponseInfo::~ResponseInfo() {
diff --git a/webkit/glue/resource_loader_bridge.h b/webkit/glue/resource_loader_bridge.h
index 482ca84..2061a3b 100644
--- a/webkit/glue/resource_loader_bridge.h
+++ b/webkit/glue/resource_loader_bridge.h
@@ -17,6 +17,11 @@
 #ifndef RESOURCE_LOADER_BRIDGE_H_
 #define RESOURCE_LOADER_BRIDGE_H_
 
+#include "build/build_config.h"

+#if defined(OS_POSIX)

+#include "base/file_descriptor_posix.h"

+#endif

+#include "base/platform_file.h"
 #include "base/ref_counted.h"
 #include "base/time.h"
 #include "googleurl/src/gurl.h"
@@ -61,6 +66,20 @@ class ResourceLoaderBridge {
 
     // Content length if available. -1 if not available
     int64 content_length;
+
+    // A platform specific handle for a file that carries response data. This

+    // entry is used if the resource request is of type ResourceType::MEDIA and

+    // the underlying cache layer keeps the response data in a standalone file.

+#if defined(OS_POSIX)

+    // If the response data file is available, the file handle is stored in

+    // response_data_file.fd, its value is base::kInvalidPlatformFileValue

+    // otherwise.

+    base::FileDescriptor response_data_file;

+#elif defined(OS_WIN)

+    // An asynchronous file handle to the response data file, its value is

+    // base::kInvalidPlatformFileValue if the file is not available.

+    base::PlatformFile response_data_file;

+#endif
   };
 
   // See the SyncLoad method declared below.  (The name of this struct is not