[telemetry] convert bitmaptools to use gyp

tools/telemetry/telemetry.gyp

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'targets' : [
     {
       'target_name': 'bitmaptools',
-      'type': 'none',
-      'variables': {
-        'output_path': '<(PRODUCT_DIR)',
+      'type': 'shared_library',
+      'product_prefix': '',
+      'product_dir': '<(PRODUCT_DIR)',
+      'sources': [
+        'telemetry/core/bitmaptools/bitmaptools.cc',
+      ],
+      'cflags': [
+        '<!@(python telemetry/core/build_extension.py cflags)',
+      ],
+      'include_dirs': [
+        '<!@(python telemetry/core/build_extension.py include_dirs)',
+      ],
+      'link_settings': {
+        'ldflags': [
+          '<!@(python telemetry/core/build_extension.py ldflags)',
+        ],
       },
       'conditions': [
-        ['OS=="android" or OS=="linux" or OS=="mac"', {
-          'variables': {
-            'python_extension': '.so'
-          },
-        }],
         ['OS=="win"', {
-          'variables': {
-            'python_extension': '.pyd'
-          },
-        }],
-        ['OS=="android" or OS=="linux" or OS=="mac" or OS=="win"', {
-          'actions': [{
-            'action_name': 'bitmaptools',
-            'inputs': [
-              'telemetry/core/build_extension.py',
-              'telemetry/core/bitmaptools/bitmaptools.cc',
-            ],
-            'outputs': [
-              '<(output_path)/bitmaptools>(python_extension)'
-            ],
-            'action': [
-              'python',
-              '<@(_inputs)',
-              '<(output_path)',
-              'bitmaptools',
-            ]
-          }],
+          'product_extension': 'pyd',
         }],
       ]
     },
   ],
 }