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

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index a8b5d7ec88fb962c7deee38422329c897b25b241..3803d414794bdbb0b15af7ec8d60a4120cb35136 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -253,6 +253,12 @@
       # See http://clang.llvm.org/docs/ThreadSanitizer.html
       'tsan%': 0,
 
+      # Use a modified version of Clang to intercept allocated types and sizes
+      # for allocated objects. clang_profiling_allocated_type=1 implies clang=1.
+      # See http://dev.chromium.org/developers/deep-memory-profiler/cpp-object-type-identifier
+      # TODO(dmikurube): Support mac.  See http://crbug.com/123758#c11
+      'clang_profiling_allocated_type%': 0,
+
       # Set to true to instrument the code with function call logger.
       # See src/third_party/cygprofile/cyg-profile.cc for details.
       'order_profiling%': 0,
@@ -585,6 +591,7 @@
     'clang_use_chrome_plugins%': '<(clang_use_chrome_plugins)',
     'asan%': '<(asan)',
     'tsan%': '<(tsan)',
+    'clang_profiling_allocated_type%': '<(clang_profiling_allocated_type)',
     'order_profiling%': '<(order_profiling)',
     'order_text_section%': '<(order_text_section)',
     'enable_extensions%': '<(enable_extensions)',
@@ -1202,6 +1209,12 @@
         'clang%': 1,
       }],
 
+      ['OS=="linux" and clang_profiling_allocated_type==1', {
+        'clang%': 1,
+        'clang_use_chrome_plugins%': 0,
+        'make_clang_dir%': 'third_party/llvm-allocated-type/Linux_x64',
+      }],
+
       # On valgrind bots, override the optimizer settings so we don't inline too
       # much and make the stacks harder to figure out.
       #
@@ -1350,6 +1363,19 @@
       ],
     },
     'conditions': [
+      ['OS=="linux" and linux_use_tcmalloc==1 and clang_profiling_allocated_type==1', {
+        'cflags_cc!': ['-fno-rtti'],
+        'cflags_cc+': [
+          '-frtti',
+          '-gline-tables-only',
+          '-fintercept-allocation-functions',
+          '-include ../../base/allocator/allocated_type_profiler.h',
+        ],
+        'defines': ['PROFILING_ALLOCATED_TYPE'],
+        'dependencies': [
+          '<(DEPTH)/base/allocator/allocator.gyp:allocated_type_profiler',
+        ],
+      }],
       ['OS=="win" and "<(msbuild_toolset)"!=""', {
         'msbuild_toolset': '<(msbuild_toolset)',
       }],