Type profiler by intercepting 'new' and 'delete' expressions.

content/app/content_main_runner.cc

Index: content/app/content_main_runner.cc
diff --git a/content/app/content_main_runner.cc b/content/app/content_main_runner.cc
index 4d76ab1f5170d86e479d12bfb8e9bd007a88ab05..3c96036d88e5b206d56d1bd8a9479a2065b0da16 100644
--- a/content/app/content_main_runner.cc
+++ b/content/app/content_main_runner.cc
@@ -48,6 +48,9 @@
 
 #if defined(USE_TCMALLOC)
 #include "third_party/tcmalloc/chromium/src/gperftools/malloc_extension.h"
+#if defined(TYPE_PROFILING)
+#include "base/allocator/type_profiler_tcmalloc.h"
+#endif
 #endif
 
 #if defined(OS_WIN)
@@ -440,13 +443,22 @@ static void ReleaseFreeMemoryThunk() {
                          const char** argv,
                          ContentMainDelegate* delegate) OVERRIDE {
 
-    // NOTE(willchan): One might ask why this call is done here rather than in
-    // process_util_linux.cc with the definition of
+    // NOTE(willchan): One might ask why these TCMalloc-related calls are done
+    // here rather than in process_util_linux.cc with the definition of
     // EnableTerminationOnOutOfMemory().  That's because base shouldn't have a
     // dependency on TCMalloc.  Really, we ought to have our allocator shim code
     // implement this EnableTerminationOnOutOfMemory() function.  Whateverz.
     // This works for now.
 #if !defined(OS_MACOSX) && defined(USE_TCMALLOC)
+
+#if defined(TYPE_PROFILING)
+    bool is_type_profiler_initialized =
+        base::type_profiler::InterceptFunctions::SetFunctions(
+            base::type_profiler::NewInterceptForTCMalloc,
+            base::type_profiler::DeleteInterceptForTCMalloc);
+    DCHECK(is_type_profiler_initialized);
+#endif
+
     // For tcmalloc, we need to tell it to behave like new.
     tc_set_new_mode(1);