Merged third_party/tcmalloc/vendor/src(google-perftools r87) into...

third_party/tcmalloc/chromium/src/malloc_extension.cc

Index: third_party/tcmalloc/chromium/src/malloc_extension.cc
===================================================================
--- third_party/tcmalloc/chromium/src/malloc_extension.cc	(revision 41942)
+++ third_party/tcmalloc/chromium/src/malloc_extension.cc	(working copy)
@@ -143,10 +143,14 @@
   // Default implementation does nothing
 }
 
-void MallocExtension::ReleaseFreeMemory() {
+void MallocExtension::ReleaseToSystem(size_t num_bytes) {
   // Default implementation does nothing
 }
 
+void MallocExtension::ReleaseFreeMemory() {
+  ReleaseToSystem(static_cast<size_t>(-1));   // SIZE_T_MAX
+}
+
 void MallocExtension::SetMemoryReleaseRate(double rate) {
   // Default implementation does nothing
 }
@@ -300,6 +304,10 @@
   DumpAddressMap(writer);
 }
 
+void MallocExtension::Ranges(void* arg, RangeFunction func) {
+  // No callbacks by default
+}
+
 // These are C shims that work on the current instance.
 
 #define C_SHIM(fn, retval, paramlist, arglist)          \
@@ -325,5 +333,6 @@
 C_SHIM(MarkThreadIdle, void, (void), ());
 C_SHIM(MarkThreadBusy, void, (void), ());
 C_SHIM(ReleaseFreeMemory, void, (void), ());
+C_SHIM(ReleaseToSystem, void, (size_t num_bytes), (num_bytes));
 C_SHIM(GetEstimatedAllocatedSize, size_t, (size_t size), (size));
 C_SHIM(GetAllocatedSize, size_t, (void* p), (p));