[Mac/GN] Configure ASan for bundled targets.

build/toolchain/mac/linker_driver.py

Index: build/toolchain/mac/linker_driver.py
diff --git a/build/toolchain/mac/linker_driver.py b/build/toolchain/mac/linker_driver.py
index 40676f6427dfb882840d2b9418ba21143633b5d5..223b352ed8ee888fcfd91b433be7783462644660 100755
--- a/build/toolchain/mac/linker_driver.py
+++ b/build/toolchain/mac/linker_driver.py
@@ -24,6 +24,11 @@ import sys
 # removal of the special driver arguments, described below). Then the driver
 # performs additional actions, based on these arguments:
 #
+#   -Wcrl,installname,<old_intall_name>,<new_install_name>
+#       After invoking the linker, this will run `install_name_tool` on the
+#       linker's output. It will use the -change option to change a dylib's
+#       install name from old to new.
+#
 #   -Wcrl,dsym,<dsym_path_prefix>
 #       After invoking the linker, this will run `dsymutil` on the linker's
 #       output, producing a dSYM bundle, stored at dsym_path_prefix. As an
@@ -114,6 +119,28 @@ def ProcessLinkerDriverArg(arg):
   raise ValueError('Unknown linker driver argument: %s' % (arg,))
 
 
+def RunInstallNameTool(old_comma_new, full_args):
+  """Linker driver action for -Wcrl,installname,<old>,<new>. Invokes
+  `install_name_tool -change <old> <new>` on the linker's output.
+
+  Args:
+    old_comma_new: string, The comma-separated old and new install names to
+        change.
+    full_args: list of string, Full argument list for the linker driver.
+
+  Returns:
+      list of string, Build step outputs.
+  """
+  (old, new) = old_comma_new.split(',')
+  if not len(old) or not len(new):
+    raise ValueError('Unspecified old and new paths')
+
+  linker_out = _FindLinkerOutput(full_args)
+  subprocess.check_call(
+      ['xcrun', 'install_name_tool', '-change', old, new, linker_out])
+  return []
+
+
 def RunDsymUtil(dsym_path_prefix, full_args):
   """Linker driver action for -Wcrl,dsym,<dsym-path-prefix>. Invokes dsymutil
   on the linker's output and produces a dsym file at |dsym_file| path.
@@ -212,6 +239,7 @@ order in which the actions are invoked. The first item in the tuple is the
 argument's -Wcrl,<sub_argument> and the second is the function to invoke.
 """
 _LINKER_DRIVER_ACTIONS = [
+    ('installname,', RunInstallNameTool),
     ('dsym,', RunDsymUtil),
     ('unstripped,', RunSaveUnstripped),
     ('strip,', RunStrip),