Reland the ULONG -> SIZE_T change from 317177

Testing shows that this change is correct, but there was no evidence supporting the other change. Will manually run the x64 dbg test try bot for this change.

TBR=thakis@chromium.org,jvoung@chromium.org
BUG=458690,460563

Review URL: https://codereview.chromium.org/942003008

Cr-Commit-Position: refs/heads/master@{#318160}

chrome_elf/blacklist/blacklist_interceptions.cc

@@ -51,7 +51,7 @@ base::string16 GetBackingModuleFilePath(PVOID address) {
   DCHECK_NT(g_nt_query_virtual_memory_func);
 
   // We'll start with something close to max_path characters for the name.
-  ULONG buffer_bytes = MAX_PATH * 2;
+  SIZE_T buffer_bytes = MAX_PATH * 2;
   std::vector<BYTE> buffer_data(buffer_bytes);
 
   for (;;) {
@@ -61,7 +61,7 @@ base::string16 GetBackingModuleFilePath(PVOID address) {
     if (!section_name)
       break;
 
-    ULONG returned_bytes;
+    SIZE_T returned_bytes;
     NTSTATUS ret = g_nt_query_virtual_memory_func(
         NtCurrentProcess, address, MemorySectionName, section_name,
         buffer_bytes, &returned_bytes);

sandbox/win/src/nt_internals.h

@@ -450,8 +450,8 @@ typedef NTSTATUS (WINAPI *NtQueryVirtualMemoryFunction)(
   IN PVOID BaseAddress,
   IN MEMORY_INFORMATION_CLASS MemoryInformationClass,
   OUT PVOID MemoryInformation,
-  IN ULONG MemoryInformationLength,
-  OUT PULONG ReturnLength OPTIONAL);
+  IN SIZE_T MemoryInformationLength,
+  OUT PSIZE_T ReturnLength OPTIONAL);
 
 typedef NTSTATUS (WINAPI *NtProtectVirtualMemoryFunction)(
   IN HANDLE ProcessHandle,

sandbox/win/src/sandbox_nt_util.cc

@@ -469,7 +469,7 @@ UNICODE_STRING* GetImageInfoFromModule(HMODULE module, uint32* flags) {
 
 UNICODE_STRING* GetBackingFilePath(PVOID address) {
   // We'll start with something close to max_path charactes for the name.
-  ULONG buffer_bytes = MAX_PATH * 2;
+  SIZE_T buffer_bytes = MAX_PATH * 2;
 
   for (;;) {
     MEMORY_SECTION_NAME* section_name = reinterpret_cast<MEMORY_SECTION_NAME*>(
@@ -478,7 +478,7 @@ UNICODE_STRING* GetBackingFilePath(PVOID address) {
     if (!section_name)
       return NULL;
 
-    ULONG returned_bytes;
+    SIZE_T returned_bytes;
     NTSTATUS ret = g_nt.QueryVirtualMemory(NtCurrentProcess, address,
                                            MemorySectionName, section_name,
                                            buffer_bytes, &returned_bytes);