Chromium side patch for DB support on Linux.

chrome/common/render_messages.h

Index: chrome/common/render_messages.h
===================================================================
--- chrome/common/render_messages.h	(revision 24791)
+++ chrome/common/render_messages.h	(working copy)
@@ -46,7 +46,12 @@
 #include "webkit/glue/webpreferences.h"
 #include "webkit/glue/webview_delegate.h"
 
+#if defined(OS_WIN)
+#include "base/platform_file.h"
+#endif
+
 #if defined(OS_POSIX)
+#include "base/file_descriptor_posix.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #endif
 
@@ -387,6 +392,15 @@
   std::vector<int> pages;
 };
 
+struct ViewMsg_DatabaseOpenFileResponse_Params {
+#if defined(OS_WIN)
+  base::PlatformFile file_handle;     // DB file handle
+#elif defined(OS_POSIX)
+  base::FileDescriptor file_handle;   // DB file handle
+  base::FileDescriptor dir_handle;    // DB directory handle
+#endif
+};
+
 // Parameters to describe a rendered page.
 struct ViewHostMsg_DidPrintPage_Params {
   // A shared memory handle to the EMF data. This data can be quite large so a
@@ -1853,6 +1867,33 @@
 };
 
 template <>
+struct ParamTraits<ViewMsg_DatabaseOpenFileResponse_Params> {
+  typedef ViewMsg_DatabaseOpenFileResponse_Params param_type;
+  static void Write(Message* m, const param_type& p) {
+    WriteParam(m, p.file_handle);
+#if defined(OS_POSIX)
+    WriteParam(m, p.dir_handle);
+#endif
+  }
+  static bool Read(const Message* m, void** iter, param_type* p) {
+    return ReadParam(m, iter, &p->file_handle)
+#if defined(OS_POSIX)
+        && ReadParam(m, iter, &p->dir_handle)
+#endif
+      ;
+  }
+  static void Log(const param_type& p, std::wstring* l) {
+    l->append(L"(");
+    LogParam(p.file_handle, l);
+#if defined(OS_POSIX)
+    l->append(L", ");
+    LogParam(p.dir_handle, l);
+#endif
+    l->append(L")");
+  }
+};
+
+template <>
 struct ParamTraits<appcache::Status> {
   typedef appcache::Status param_type;
   static void Write(Message* m, const param_type& p) {