base: Add support for malloc zones to the allocator shim

base/allocator/allocator_shim_default_dispatch_to_glibc.cc

Index: base/allocator/allocator_shim_default_dispatch_to_glibc.cc
diff --git a/base/allocator/allocator_shim_default_dispatch_to_glibc.cc b/base/allocator/allocator_shim_default_dispatch_to_glibc.cc
index 7415ec60c01b69ea5cc4645b5f44259a5d56e687..8574da3eb3d011f08625f1e11cbeb1b0b5729965 100644
--- a/base/allocator/allocator_shim_default_dispatch_to_glibc.cc
+++ b/base/allocator/allocator_shim_default_dispatch_to_glibc.cc
@@ -22,27 +22,38 @@ namespace {
 
 using base::allocator::AllocatorDispatch;
 
-void* GlibcMalloc(const AllocatorDispatch*, size_t size) {
+void* GlibcMalloc(const AllocatorDispatch*, size_t size, void* context) {
   return __libc_malloc(size);
 }
 
-void* GlibcCalloc(const AllocatorDispatch*, size_t n, size_t size) {
+void* GlibcCalloc(const AllocatorDispatch*,
+                  size_t n,
+                  size_t size,
+                  void* context) {
   return __libc_calloc(n, size);
 }
 
-void* GlibcRealloc(const AllocatorDispatch*, void* address, size_t size) {
+void* GlibcRealloc(const AllocatorDispatch*,
+                   void* address,
+                   size_t size,
+                   void* context) {
   return __libc_realloc(address, size);
 }
 
-void* GlibcMemalign(const AllocatorDispatch*, size_t alignment, size_t size) {
+void* GlibcMemalign(const AllocatorDispatch*,
+                    size_t alignment,
+                    size_t size,
+                    void* context) {
   return __libc_memalign(alignment, size);
 }
 
-void GlibcFree(const AllocatorDispatch*, void* address) {
+void GlibcFree(const AllocatorDispatch*, void* address, void* context) {
   __libc_free(address);
 }
 
-size_t GlibcGetSizeEstimate(const AllocatorDispatch*, void* address) {
+size_t GlibcGetSizeEstimate(const AllocatorDispatch*,
+                            void* address,
+                            void* context) {
   // TODO(siggi, primiano): malloc_usable_size may need redirection in the
   //     presence of interposing shims that divert allocations.
   return malloc_usable_size(address);