Route calls to tcmalloc MallocExtension through allocator agnostic interface

base/allocator/allocator.gyp

Index: base/allocator/allocator.gyp
diff --git a/base/allocator/allocator.gyp b/base/allocator/allocator.gyp
index ee07ecc451917c4aa088db39dc148cef77a51efb..63618a26058d99afd9ff7072ce42f9976507aa30 100644
--- a/base/allocator/allocator.gyp
+++ b/base/allocator/allocator.gyp
@@ -427,6 +427,17 @@
         }],
       ],
     },
+    {
+        'target_name': 'allocator_extension',
+        'type': 'static_library',
+        'sources': [
+            'allocator_extension.cc',

[jam, 2012/04/26 21:28:20]

nit: 2 space tabbing..

+            'allocator_extension.h',
+        ],
+        'include_dirs': [
+            '../../'
+        ],
+    },
       ],
   'conditions': [
     ['OS=="win"', {
@@ -456,6 +467,7 @@
           'type': 'executable',
           'dependencies': [
             'allocator',
+            'allocator_extension',
             '../../testing/gtest.gyp:gtest',
           ],
           'include_dirs': [