supersize: Strip linker-added prefixes from symbol names

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 1ec51c4a3a54b1aaeed1424ac21b4406172275b2..c9df6ac93b8bc80b89b158b957e4ec3eda722412 100644
--- a/tools/binary_size/libsupersize/testdata/SymbolGroupMethods.golden
+++ b/tools/binary_size/libsupersize/testdata/SymbolGroupMethods.golden
@@ -4,22 +4,22 @@ Showing 10 symbols with total size: 2652506 bytes
 Number of object files: 5
 
 First columns are: running total, type, size
- 2652236 *@Group      2652236 {no path}
-             {global} (count=25)
- 2652330 *@Group      94      third_party/container.c
+ 2652080 *@Group      2652080 {no path}
+             {global} (count=23)
+ 2652240 *@Group      160     third_party/container.c
+             base::android (count=3)
+ 2652334 *@Group      94      third_party/container.c
              blink::PaintChunker (count=1)
- 2652386 *@Group      56      {no path}
+ 2652390 *@Group      56      {no path}
              blink::ContiguousContainerBase (count=3)
- 2652434 *@Group      48      {no path}
+ 2652438 *@Group      48      {no path}
              chrome::mojom (count=2)
- 2652466 *@Group      32      third_party/container.c
+ 2652470 *@Group      32      third_party/container.c
              chrome::mojom::FilePatcher (count=1)
- 2652490 *@Group      24      base/page_allocator.cc
+ 2652494 *@Group      24      base/page_allocator.cc
              mojo (count=1)
- 2652498 *@Group      8       {no path}
+ 2652502 *@Group      8       {no path}
              google::protobuf::internal (count=2)
- 2652502 *@Group      4       third_party/container.c
-             base::android (count=1)
  2652506 *@Group      4       third_party/paint.cc
              blink::CSSValueKeywordsHash::findValueImpl (count=1)
  2652506 *@Group      0       third_party/icu/ucnv_ext.c
@@ -30,18 +30,18 @@ Showing 7 symbols with total size: 2652506 bytes
 Number of object files: 4
 
 First columns are: running total, type, size
- 2652236 *@Group      2652236 {no path}
-             {global} (count=25)
- 2652390 *@Group      154     {no path}
+ 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)
- 2652470 *@Group      80      {no path}
+ 2652474 *@Group      80      {no path}
              chrome (count=3)
- 2652494 *@Group      24      base/page_allocator.cc
+ 2652498 *@Group      24      base/page_allocator.cc
              mojo (count=1)
- 2652502 *@Group      8       {no path}
+ 2652506 *@Group      8       {no path}
              google (count=2)
- 2652506 *@Group      4       third_party/container.c
-             base (count=1)
  2652506 *@Group      0       third_party/icu/ucnv_ext.c
              SaveHistogram (count=1)
 GroupByNamespace(depth=1, fallback=None)
@@ -50,17 +50,17 @@ Showing 7 symbols with total size: 2652506 bytes
 Number of object files: 4
 
 First columns are: running total, type, size
- 2652236 *@Group      2652236 {no path}
- 2652390 *@Group      154     {no path}
+ 2652080 *@Group      2652080 {no path}
+ 2652240 *@Group      160     third_party/container.c
+             base (count=3)
+ 2652394 *@Group      154     {no path}
              blink (count=5)
- 2652470 *@Group      80      {no path}
+ 2652474 *@Group      80      {no path}
              chrome (count=3)
- 2652494 *@Group      24      base/page_allocator.cc
+ 2652498 *@Group      24      base/page_allocator.cc
              mojo (count=1)
- 2652502 *@Group      8       {no path}
+ 2652506 *@Group      8       {no path}
              google (count=2)
- 2652506 *@Group      4       third_party/container.c
-             base (count=1)
  2652506 *@Group      0       third_party/icu/ucnv_ext.c
              SaveHistogram (count=1)
 GroupByNamespace(depth=1, min_count=2)
@@ -69,17 +69,17 @@ Showing 7 symbols with total size: 2652506 bytes
 Number of object files: 4
 
 First columns are: running total, type, size
- 2652236 *@Group      2652236 {no path}
-             {global} (count=25)
- 2652390 *@Group      154     {no path}
+ 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)
- 2652470 *@Group      80      {no path}
+ 2652474 *@Group      80      {no path}
              chrome (count=3)
- 2652494 d@0x2cd8538  24      base/page_allocator.cc
+ 2652498 d@0x2cd8538  24      base/page_allocator.cc
              mojo::MessageReceiver [vtable]
- 2652502 *@Group      8       {no path}
+ 2652506 *@Group      8       {no path}
              google (count=2)
- 2652506 d@0x2de70a0  4       third_party/container.c
-             base::android::g_renderer_histogram_code
  2652506 b@0x2dffe80  200     third_party/icu/ucnv_ext.c
              SaveHistogram::atomic_histogram_pointer