[Android] Sets up a coverage system for java using EMMA

build/android/instr_action.gypi

Index: build/android/instr_action.gypi
diff --git a/build/android/instr_action.gypi b/build/android/instr_action.gypi
new file mode 100644
index 0000000000000000000000000000000000000000..c5b3bef8cb9642862ad035bf1dd5b85756881845
--- /dev/null
+++ b/build/android/instr_action.gypi
@@ -0,0 +1,50 @@
+# Copyright (c) 2013 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.
+
+# This file is meant to be included into an action to provide a rule that
+# instruments either java class files, or jars.
+
+{
+  'variables': {
+    'instr_type%': 'jar',
+    'input_path%': '',
+    'output_path%': '',
+    'stamp_path%': '',
+    'extra_instr_args': [],
+    'conditions': [
+      ['emma_instrument != 0', {
+        'extra_instr_args': [
+          '--coverage-file=<(intermediate_dir)/coverage.em',
+          '--sources-file=<(intermediate_dir)/emma_sources.txt',
+          '--sources=<(java_in_dir)/src >(additional_src_dirs) >(generated_src_dirs)',
+          '--src-root=<(DEPTH)',
+          '--sdk-root=<(android_sdk_root)',
+          '--intermediate-dir=<(intermediate_dir)/emma',
+        ],
+        'conditions': [
+          ['instr_type == "jar"', {
+            'instr_action': 'instrument_jar',
+          }, {
+            'instr_action': 'instrument_classes',
+          }]
+        ],
+      }, {
+        'instr_action': 'copy',
+        'extra_instr_args': [],
+      }]
+    ]
+  },
+  'inputs': [
+    '<(DEPTH)/build/android/gyp/emma_instr.py',
+    '<(DEPTH)/build/android/pylib/utils/command_option_parser.py',
+  ],
+  'action': [
+    'python', '<(DEPTH)/build/android/gyp/emma_instr.py',
+    '<(instr_action)',
+    '--input-path=<(input_path)',
+    '--output-path=<(output_path)',
+    '--stamp=<(stamp_path)',
+    '<@(extra_instr_args)',
+  ]
+}