Roll Clang 233105-2:237739-1

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index e31847c52d66054799d19649d9e522502f8791f5..db92d273b60313b35087115ce7e865e9dca719bd 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -3805,6 +3805,14 @@
                 'cflags': ['-fno-unwind-tables', '-fno-asynchronous-unwind-tables'],
                 'defines': ['NO_UNWIND_TABLES'],
               }],
+              ['clang==1', {
+                # Non-unique section names appears to make linker dead stripping
+                # less effective. See http://crbug.com/483026#c20
+                # TODO(hans): Remove this if resolved upstream.
+                'cflags': [
+                  '-funique-section-names',
+                ],
+              }],
             ],
           },
         },