Hookup the generic heap intercept for Windows.

base/allocator/allocator_shim_override_libc_symbols.h

Index: base/allocator/allocator_shim_override_libc_symbols.h
diff --git a/base/allocator/allocator_shim_override_libc_symbols.h b/base/allocator/allocator_shim_override_libc_symbols.h
index 37b3b4eb1219cde7292bb89dde826267eb78e7ce..707f7226d99ce6865d3b67adb7a293a7a537cc25 100644
--- a/base/allocator/allocator_shim_override_libc_symbols.h
+++ b/base/allocator/allocator_shim_override_libc_symbols.h
@@ -16,6 +16,8 @@
 
 extern "C" {
 
+#if !defined(OS_WIN)
+
 SHIM_ALWAYS_EXPORT void* malloc(size_t size) __THROW
     SHIM_ALIAS_SYMBOL(ShimMalloc);
 
@@ -43,6 +45,25 @@ SHIM_ALWAYS_EXPORT void* pvalloc(size_t size) __THROW
 SHIM_ALWAYS_EXPORT int posix_memalign(void** r, size_t a, size_t s) __THROW
     SHIM_ALIAS_SYMBOL(ShimPosixMemalign);
 
+#else
+
+__declspec(restrict) void* malloc(size_t size) {

[Sigurður Ásgeirsson, 2016/07/11 19:51:51]

I don't know that the link-time name aliasing used above is available on
Windows, nor that it has the desired effect. Come to think of it, the binding of
these functions in preference to the CRT's seems precarious, as they rely on the
lib containing these functions to precede the CRT on the linker's command line?

+  return ShimMalloc(size);
+}
+
+void free(void* ptr) {
+  ShimFree(ptr);
+}
+
+__declspec(restrict) void* realloc(void* ptr, size_t size) {
+  return ShimRealloc(ptr, size);
+}
+
+__declspec(restrict) void* calloc(size_t n, size_t size) {
+  return ShimCalloc(n, size);
+}
+
+#endif
 // The default dispatch translation unit has to define also the following
 // symbols (unless they are ultimately routed to the system symbols):
 //   void malloc_stats(void);