Process Statistics header, add max RSS to render_pdfs

gyp/tools.gyp

 # GYP file to build various tools.
 #
 # To build on Linux:
 #  ./gyp_skia tools.gyp && make tools
 #
 {
   'includes': [
     'apptype_console.gypi',
   ],
   'targets': [
@@ skipping 512 matching lines @@
       'include_dirs': [
         '../src/core',
         '../src/pipe/utils/',
         '../src/utils/',
       ],
       'dependencies': [
         'flags.gyp:flags',
         'pdf.gyp:pdf',
         'skia_lib.gyp:skia_lib',
         'tools.gyp:picture_utils',
+        'tools.gyp:sk_tool_proc_stats',
       ],
       'conditions': [
         ['skia_win_debuggers_path and skia_os == "win"',
           {
             'dependencies': [
               'tools.gyp:win_dbghelp',
             ],
           },
         ],
         # VS static libraries don't have a linker option. We must set a global
@@ skipping 96 matching lines @@
     {
       'target_name': 'test_image_decoder',
       'type': 'executable',
       'sources': [
         '../tools/test_image_decoder.cpp',
       ],
       'dependencies': [
         'skia_lib.gyp:skia_lib',
       ],
     },
+    {
+      'target_name': 'sk_tool_proc_stats',
+      'type': 'static_library',
+      'sources': [
+        '../tools/ProcStats.h',
+        '../tools/ProcStats.cpp',
+      ],
+      'direct_dependent_settings': {
+        'include_dirs': [ '../tools', ],
+      },
+    },
   ],
   'conditions': [
     ['skia_shared_lib',
       {
         'targets': [
           {
             'target_name': 'sklua',
             'product_name': 'skia',
             'product_prefix': '',
             'product_dir': '<(PRODUCT_DIR)/',
@@ skipping 72 matching lines @@
               'flags.gyp:flags',
               'skia_lib.gyp:skia_lib',
               'resources',
             ],
           },
         ],
       },
     ],
   ],
 }