supersize: Track symbol aliases and shared symbols

tools/binary_size/libsupersize/testdata/SymbolGroupMethods.golden

Index: tools/binary_size/libsupersize/testdata/SymbolGroupMethods.golden
diff --git a/tools/binary_size/libsupersize/testdata/SymbolGroupMethods.golden b/tools/binary_size/libsupersize/testdata/SymbolGroupMethods.golden
index c9df6ac93b8bc80b89b158b957e4ec3eda722412..445e31092cc7c6b5b668c8a409d09b9ff5be02e5 100644
--- a/tools/binary_size/libsupersize/testdata/SymbolGroupMethods.golden
+++ b/tools/binary_size/libsupersize/testdata/SymbolGroupMethods.golden
@@ -1,85 +1,85 @@
 GroupByNamespace()
-Showing 10 symbols with total size: 2652506 bytes
-.text=0 bytes    .rodata=0 bytes    other=2.53mb     total=2.53mb
+Showing 10 symbols with total pss: 4036054 bytes
+.text=0 bytes    .rodata=0 bytes    other=3.85mb     total=3.85mb
 Number of object files: 5
 
-First columns are: running total, type, size
- 2652080 *@Group      2652080 {no path}
-             {global} (count=23)
- 2652240 *@Group      160     third_party/container.c
+First columns are: running total, address, pss
+ 3245548 *@Group      3245548 {no path}
+             {global} (count=26)
+ 4035476 *@Group      789928  {no path}
+             chrome::mojom (count=2)
+ 4035676 *@Group      200     third_party/icu/ucnv_ext.c
+             SaveHistogram (count=1)
+ 4035836 *@Group      160     third_party/container.c
              base::android (count=3)
- 2652334 *@Group      94      third_party/container.c
+ 4035930 *@Group      94      third_party/container.c
              blink::PaintChunker (count=1)
- 2652390 *@Group      56      {no path}
+ 4035986 *@Group      56      {no path}
              blink::ContiguousContainerBase (count=3)
- 2652438 *@Group      48      {no path}
-             chrome::mojom (count=2)
- 2652470 *@Group      32      third_party/container.c
+ 4036018 *@Group      32      third_party/container.c
              chrome::mojom::FilePatcher (count=1)
- 2652494 *@Group      24      base/page_allocator.cc
+ 4036042 *@Group      24      base/page_allocator.cc
              mojo (count=1)
- 2652502 *@Group      8       {no path}
+ 4036050 *@Group      8       {no path}
              google::protobuf::internal (count=2)
- 2652506 *@Group      4       third_party/paint.cc
+ 4036054 *@Group      4       third_party/paint.cc
              blink::CSSValueKeywordsHash::findValueImpl (count=1)
- 2652506 *@Group      0       third_party/icu/ucnv_ext.c
-             SaveHistogram (count=1)
 GroupByNamespace(depth=1)
-Showing 7 symbols with total size: 2652506 bytes
-.text=0 bytes    .rodata=0 bytes    other=2.53mb     total=2.53mb
+Showing 7 symbols with total pss: 4036054 bytes
+.text=0 bytes    .rodata=0 bytes    other=3.85mb     total=3.85mb
 Number of object files: 4
 
-First columns are: running total, type, size
- 2652080 *@Group      2652080 {no path}
-             {global} (count=23)
- 2652240 *@Group      160     third_party/container.c
-             base (count=3)
- 2652394 *@Group      154     {no path}
-             blink (count=5)
- 2652474 *@Group      80      {no path}
+First columns are: running total, address, pss
+ 3245548 *@Group      3245548 {no path}
+             {global} (count=26)
+ 4035508 *@Group      789960  {no path}
              chrome (count=3)
- 2652498 *@Group      24      base/page_allocator.cc
+ 4035708 *@Group      200     third_party/icu/ucnv_ext.c
+             SaveHistogram (count=1)
+ 4035862 *@Group      154     {no path}
+             blink (count=5)
+ 4036022 *@Group      160     third_party/container.c
+             base (count=3)
+ 4036046 *@Group      24      base/page_allocator.cc
              mojo (count=1)
- 2652506 *@Group      8       {no path}
+ 4036054 *@Group      8       {no path}
              google (count=2)
- 2652506 *@Group      0       third_party/icu/ucnv_ext.c
-             SaveHistogram (count=1)
 GroupByNamespace(depth=1, fallback=None)
-Showing 7 symbols with total size: 2652506 bytes
-.text=0 bytes    .rodata=0 bytes    other=2.53mb     total=2.53mb
+Showing 7 symbols with total pss: 4036054 bytes
+.text=0 bytes    .rodata=0 bytes    other=3.85mb     total=3.85mb
 Number of object files: 4
 
-First columns are: running total, type, size
- 2652080 *@Group      2652080 {no path}
- 2652240 *@Group      160     third_party/container.c
-             base (count=3)
- 2652394 *@Group      154     {no path}
-             blink (count=5)
- 2652474 *@Group      80      {no path}
+First columns are: running total, address, pss
+ 3245548 *@Group      3245548 {no path}
+ 4035508 *@Group      789960  {no path}
              chrome (count=3)
- 2652498 *@Group      24      base/page_allocator.cc
+ 4035708 *@Group      200     third_party/icu/ucnv_ext.c
+             SaveHistogram (count=1)
+ 4035862 *@Group      154     {no path}
+             blink (count=5)
+ 4036022 *@Group      160     third_party/container.c
+             base (count=3)
+ 4036046 *@Group      24      base/page_allocator.cc
              mojo (count=1)
- 2652506 *@Group      8       {no path}
+ 4036054 *@Group      8       {no path}
              google (count=2)
- 2652506 *@Group      0       third_party/icu/ucnv_ext.c
-             SaveHistogram (count=1)
 GroupByNamespace(depth=1, min_count=2)
-Showing 7 symbols with total size: 2652506 bytes
-.text=0 bytes    .rodata=0 bytes    other=2.53mb     total=2.53mb
+Showing 7 symbols with total pss: 4036054 bytes
+.text=0 bytes    .rodata=0 bytes    other=3.85mb     total=3.85mb
 Number of object files: 4
 
-First columns are: running total, type, size
- 2652080 *@Group      2652080 {no path}
-             {global} (count=23)
- 2652240 *@Group      160     third_party/container.c
-             base (count=3)
- 2652394 *@Group      154     {no path}
-             blink (count=5)
- 2652474 *@Group      80      {no path}
+First columns are: running total, address, pss
+ 3245548 *@Group      3245548 {no path}
+             {global} (count=26)
+ 4035508 *@Group      789960  {no path}
              chrome (count=3)
- 2652498 d@0x2cd8538  24      base/page_allocator.cc
+ 4035662 *@Group      154     {no path}
+             blink (count=5)
+ 4035822 *@Group      160     third_party/container.c
+             base (count=3)
+ 4035846 d@0x2cd8538  24      base/page_allocator.cc
              mojo::MessageReceiver [vtable]
- 2652506 *@Group      8       {no path}
+ 4035854 *@Group      8       {no path}
              google (count=2)
- 2652506 b@0x2dffe80  200     third_party/icu/ucnv_ext.c
+ 4035854 b@0x2dffe80  200     third_party/icu/ucnv_ext.c
              SaveHistogram::atomic_histogram_pointer