supersize: Add "printed" to console, Show ~0 for PSS >0 <.1

tools/binary_size/libsupersize/testdata/FullDescription.golden

 Metadata:
     elf_arch=arm
     elf_build_id=WhatAnAmazingBuildId
     elf_file_name=elf
     elf_mtime={redacted}
     git_revision=abc123
     gn_args=var1=true var2="foo"
     map_file_name=../test.map
     tool_prefix=tools/binary_size/libsupersize/testdata/mock_toolchain/
 
@@ skipping 41 matching lines @@
 * 2 placeholders (symbols that start with **) account for 1166732 bytes (59.6%)
 * 0 symbols have shared ownership
 Section t: has 100.0% of 35900712 bytes accounted for from 18 symbols. 0 bytes are unaccounted for.
 * Padding accounts for 48 bytes (0.0%)
 * 3 placeholders (symbols that start with **) account for 35830760 bytes (99.8%)
 * Contains 5 aliases, mapped to 2 unique addresses (60 bytes)
 * 1 symbols have shared ownership (12 bytes)
 
 Showing 44 symbols (43 unique) with total pss: 43785380 bytes
 .text=34.2mb     .rodata=5.65mb     .data*=1.87mb     .bss=512kb      total=41.8mb
-Number of object files: 10
+Number of unique paths: 9
 
 Index, Running Total, Section@Address, PSS
 ------------------------------------------------------------
 0)         16 (0.0%)  t@0x28d900   pss=16  padding=0  size_without_padding=16
              source_path=base/page_allocator.cc         object_path=base/base/page_allocator.o
              flags={startup}  name=_GLOBAL__sub_I_page_allocator.cc
 1)         72 (0.0%)  t@0x28d910   pss=56  padding=0  size_without_padding=56
              source_path=base/page_allocator.cc         object_path=base/base/page_allocator.o
              flags={startup}  name=_GLOBAL__sub_I_bbr_sender.cc
 2)        100 (0.0%)  t@0x28d948   pss=28  padding=0  size_without_padding=28
@@ skipping 71 matching lines @@
                source_path=     object_path=
                flags={}  name=** merge strings
 16)  38542106 (88.0%) r@0x284d600  pss=3425  padding=0  size_without_padding=3425
              source_path=       object_path=
              flags={}  name=** merge constants
 17)  41828221 (95.5%) r@Group      pss=3286115  padding=3286115  size_without_padding=0  count=2
              source_path=       object_path=
              flags={}  name=** symbol gaps
 > 0)          3 (0.0%)  r@0x284e364  pss=3  padding=3  size_without_padding=0
                source_path=     object_path=
-               flags={}  name=** symbol gap 2
+               flags={}  name=** symbol gap 0
 > 1)    3286115 (100.0%) r@0x2c158e4  pss=3286112  padding=3286112  size_without_padding=0
                source_path=     object_path=
-               flags={}  name=** symbol gap 3 (end of section)
+               flags={}  name=** symbol gap 1 (end of section)
 18)  41828229 (95.5%) r@0x284e364  pss=8  padding=0  size_without_padding=8
              source_path=base/page_allocator.cc         object_path=base/base/page_allocator.o
 19)  41828273 (95.5%) r@0x284e370  pss=44  padding=4  size_without_padding=40
              source_path=base/page_allocator.cc         object_path=base/base/page_allocator.o
              flags={}  name=Name
 20)  41828305 (95.5%) r@0x284e398  pss=32  padding=0  size_without_padding=32
              source_path=third_party/container.c        object_path=third_party/WebKit.a/ContiguousContainer.o
              flags={}  name=chrome::mojom::FilePatcher::Name_
 21)  41828360 (95.5%) r@0x28f3450  pss=55  padding=7  size_without_padding=48
              source_path=third_party/paint.cc   object_path=third_party/WebKit.a/PaintChunker.o
@@ skipping 21 matching lines @@
              source_path=third_party/paint.cc   object_path=third_party/WebKit.a/PaintChunker.o
              flags={}  name=ChromeMainDelegateAndroid [vtable]
 29)  42618468 (97.3%) d@0x2cd8538  pss=24  padding=0  size_without_padding=24
              source_path=base/page_allocator.cc         object_path=base/base/page_allocator.o
              flags={}  name=mojo::MessageReceiver [vtable]
 30)  42618480 (97.3%) d@0x2cd8550  pss=12  padding=0  size_without_padding=12
              source_path=base/page_allocator.cc         object_path=base/base/page_allocator.o
              flags={}  name=kMethodsAnimationFrameTimeHistogram
 31)  43683612 (99.8%) d@0x2ddc608  pss=1065132  padding=1065132  size_without_padding=0
              source_path=       object_path=
-             flags={}  name=** symbol gap 3 (end of section)
+             flags={}  name=** symbol gap 0 (end of section)
 32)  43683616 (99.8%) d@0x2de7000  pss=4  padding=0  size_without_padding=4
              source_path=base/page_allocator.cc         object_path=base/base/page_allocator.o
              flags={}  name=google::protobuf::internal::pLinuxKernelCmpxchg
 33)  43683620 (99.8%) d@0x2de7004  pss=4  padding=0  size_without_padding=4
              source_path=third_party/container.c        object_path=third_party/WebKit.a/ContiguousContainer.o
              flags={}  name=google::protobuf::internal::pLinuxKernelMemoryBarrier
 34)  43683772 (99.8%) d@0x2de7008  pss=152  padding=0  size_without_padding=152
              source_path=third_party/container.c        object_path=third_party/WebKit.a/ContiguousContainer.o
              flags={rel}  name=base::android::kBaseRegisteredMethods
 35)  43683776 (99.8%) d@0x2de70a0  pss=4  padding=0  size_without_padding=4
              source_path=third_party/container.c        object_path=third_party/WebKit.a/ContiguousContainer.o
              flags={anon}  name=base::android::g_renderer_histogram_code
 36)  43683780 (99.8%) d@0x2de70a4  pss=4  padding=0  size_without_padding=4
              source_path=third_party/container.c        object_path=third_party/WebKit.a/ContiguousContainer.o
              flags={anon,rel.loc}  name=base::android::g_library_version_number
 37)  43785380 (100.0%) d@0x2dffd88  pss=101600  padding=101600  size_without_padding=0
              source_path=       object_path=
-             flags={}  name=** symbol gap 3 (end of section)
+             flags={}  name=** symbol gap 0 (end of section)
 38)  43785380 (100.0%) b@0x0        pss=262144  padding=0  size_without_padding=262144
              source_path=third_party/fft_float.cc       object_path=third_party/ffmpeg/libffmpeg_internal.a/fft_float.o
              flags={}  name=ff_cos_131072
 39)  43785380 (100.0%) b@0x0        pss=131072  padding=0  size_without_padding=131072
              source_path=third_party/fft_fixed.cc       object_path=third_party/ffmpeg/libffmpeg_internal.a/fft_fixed.o
              flags={}  name=ff_cos_131072_fixed
 40)  43785380 (100.0%) b@0x0        pss=131072  padding=0  size_without_padding=131072
              source_path=third_party/fft_float.cc       object_path=third_party/ffmpeg/libffmpeg_internal.a/fft_float.o
              flags={}  name=ff_cos_65536
 41)  43785380 (100.0%) b@0x2dffda0  pss=28  padding=0  size_without_padding=28
              source_path=third_party/icu/ucnv_ext.c     object_path=third_party/icu/icuuc/ucnv_ext.o
              flags={gen}  name=g_chrome_content_browser_client
 42)  43785380 (100.0%) b@0x2dffe80  pss=200  padding=196  size_without_padding=4
              source_path=third_party/icu/ucnv_ext.c     object_path=third_party/icu/icuuc/ucnv_ext.o
              flags={gen}  name=SaveHistogram::atomic_histogram_pointer
                   full_name=SaveHistogram(_JNIEnv*, base::android::JavaParamRef<_jobject*> const&, base::android::JavaParamRef<_jstring*> const&, base::android::JavaParamRef<_jlongArray*> const&, int)::atomic_histogram_pointer
 43)  43785380 (100.0%) b@0x2dffe84  pss=4  padding=0  size_without_padding=4
              source_path=third_party/icu/ucnv_ext.c     object_path=third_party/icu/icuuc/ucnv_ext.o
              flags={anon,gen}  name=g_AnimationFrameTimeHistogram_clazz