Turn on file access checks on Win.

base/platform_file_win.cc

Index: base/platform_file_win.cc
===================================================================
--- base/platform_file_win.cc	(revision 64981)
+++ base/platform_file_win.cc	(working copy)
@@ -6,6 +6,7 @@
 
 #include "base/file_path.h"
 #include "base/logging.h"
+#include "base/thread_restrictions.h"
 
 namespace base {
 
@@ -13,6 +14,8 @@
                                 int flags,
                                 bool* created,
                                 PlatformFileError* error_code) {
+  base::ThreadRestrictions::AssertIOAllowed();
+
   DWORD disposition = 0;
 
   if (flags & PLATFORM_FILE_OPEN)
@@ -108,10 +111,12 @@
 }
 
 bool ClosePlatformFile(PlatformFile file) {
+  base::ThreadRestrictions::AssertIOAllowed();
   return (CloseHandle(file) != 0);
 }
 
 int ReadPlatformFile(PlatformFile file, int64 offset, char* data, int size) {
+  base::ThreadRestrictions::AssertIOAllowed();
   if (file == kInvalidPlatformFileValue)
     return -1;
 
@@ -133,6 +138,7 @@
 
 int WritePlatformFile(PlatformFile file, int64 offset,
                       const char* data, int size) {
+  base::ThreadRestrictions::AssertIOAllowed();
   if (file == kInvalidPlatformFileValue)
     return -1;
 
@@ -151,6 +157,7 @@
 }
 
 bool TruncatePlatformFile(PlatformFile file, int64 length) {
+  base::ThreadRestrictions::AssertIOAllowed();
   if (file == kInvalidPlatformFileValue)
     return false;
 
@@ -176,11 +183,13 @@
 }
 
 bool FlushPlatformFile(PlatformFile file) {
+  base::ThreadRestrictions::AssertIOAllowed();
   return ((file != kInvalidPlatformFileValue) && ::FlushFileBuffers(file));
 }
 
 bool TouchPlatformFile(PlatformFile file, const base::Time& last_access_time,
                        const base::Time& last_modified_time) {
+  base::ThreadRestrictions::AssertIOAllowed();
   if (file == kInvalidPlatformFileValue)
     return false;
 
@@ -191,6 +200,7 @@
 }
 
 bool GetPlatformFileInfo(PlatformFile file, PlatformFileInfo* info) {
+  base::ThreadRestrictions::AssertIOAllowed();
   if (!info)
     return false;