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

build/java_apk.gypi

 # Copyright (c) 2012 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 a target to provide a rule
 # to build Android APKs in a consistent manner.
 #
 # To use this, create a gyp target with the following form:
 # {
 #   'target_name': 'my_package_apk',
@@ skipping 49 matching lines @@
     'app_manifest_version_code%': '<(android_app_version_code)',
     'proguard_enabled%': 'false',
     'proguard_flags_paths%': ['<(DEPTH)/build/android/empty_proguard.flags'],
     'jar_name': 'chromium_apk_<(_target_name).jar',
     'resource_dir%':'<(DEPTH)/build/android/ant/empty/res',
     'R_package%':'',
     'additional_R_text_files': [],
     'additional_res_dirs': [],
     'additional_res_packages': [],
     'is_test_apk%': 0,
+    'emma_instrument%': 0,
     'java_strings_grd%': '',
     'library_manifest_paths' : [],
     'resource_input_paths': [],
     'intermediate_dir': '<(PRODUCT_DIR)/<(_target_name)',
     'asset_location%': '<(intermediate_dir)/assets',
     'codegen_stamp': '<(intermediate_dir)/codegen.stamp',
     'compile_input_paths': [],
     'package_input_paths': [],
     'ordered_libraries_file': '<(intermediate_dir)/native_libraries.json',
     # TODO(cjhopman): build/ shouldn't refer to content/. The libraryloader and
     # nativelibraries template should be moved out of content/ (to base/?).
     # http://crbug.com/225101
     'native_libraries_template': '<(DEPTH)/content/public/android/java/templates/NativeLibraries.template',
     'native_libraries_java_dir': '<(intermediate_dir)/native_libraries_java/',
     'native_libraries_java_file': '<(native_libraries_java_dir)/NativeLibraries.java',
     'native_libraries_java_stamp': '<(intermediate_dir)/native_libraries_java.stamp',
     'native_libraries_template_data_dir': '<(intermediate_dir)/native_libraries/',
     'native_libraries_template_data_file': '<(native_libraries_template_data_dir)/native_libraries_array.h',
     'native_libraries_template_data_stamp': '<(intermediate_dir)/native_libraries_template_data.stamp',
     'compile_stamp': '<(intermediate_dir)/compile.stamp',
+    'instr_stamp': '<(intermediate_dir)/instr.stamp',
     'jar_stamp': '<(intermediate_dir)/jar.stamp',
     'obfuscate_stamp': '<(intermediate_dir)/obfuscate.stamp',
     'strip_stamp': '<(intermediate_dir)/strip.stamp',
     'classes_dir': '<(intermediate_dir)/classes',
+    'classes_final_dir': '<(intermediate_dir)/classes_instr',
     'javac_includes': [],
     'jar_excluded_classes': [],
     'jar_path': '<(PRODUCT_DIR)/lib.java/<(jar_name)',
     'obfuscated_jar_path': '<(intermediate_dir)/obfuscated.jar',
     'dex_path': '<(intermediate_dir)/classes.dex',
+    'emma_device_jar': '<(android_sdk_root)/tools/lib/emma_device.jar',
     'android_manifest_path%': '<(java_in_dir)/AndroidManifest.xml',
     'push_stamp': '<(intermediate_dir)/push.stamp',
     'link_stamp': '<(intermediate_dir)/link.stamp',
     'package_resources_stamp': '<(intermediate_dir)/package_resources.stamp',
     'codegen_input_paths': [],
     'unsigned_apk_path': '<(intermediate_dir)/<(apk_name)-unsigned.apk',
     'final_apk_path%': '<(PRODUCT_DIR)/apks/<(apk_name).apk',
     'incomplete_apk_path': '<(intermediate_dir)/<(apk_name)-incomplete.apk',
     'source_dir': '<(java_in_dir)/src',
     'apk_install_record': '<(intermediate_dir)/apk_install.record.stamp',
@@ skipping 345 matching lines @@
         '--src-dirs=>(all_src_dirs)',
         '--javac-includes=<(javac_includes)',
         '--chromium-code=<(chromium_code)',
         '--stamp=<(compile_stamp)',
 
         # TODO(newt): remove this once http://crbug.com/177552 is fixed in ninja.
         '--ignore=>!(echo \'>(_inputs)\' | md5sum)',
       ],
     },
     {
+      'action_name': 'instr_classes_<(_target_name)',
+      'message': 'Instrumenting <(_target_name) classes',
+      'variables': {
+        'input_path': '<(classes_dir)',
+        'output_path': '<(classes_final_dir)',
+        'stamp_path': '<(instr_stamp)',
+        'instr_type': 'classes',
+      },
+      'outputs': [
+        '<(instr_stamp)',
+      ],
+      'inputs': [
+        '<(compile_stamp)',
+      ],
+      'includes': [ 'android/instr_action.gypi' ],
+    },
+    {
       'action_name': 'jar_<(_target_name)',
       'message': 'Creating <(_target_name) jar',
       'inputs': [
+        '<(instr_stamp)',
         '<(DEPTH)/build/android/gyp/util/build_utils.py',
         '<(DEPTH)/build/android/gyp/util/md5_check.py',
         '<(DEPTH)/build/android/gyp/jar.py',
-        '<(compile_stamp)',
       ],
       'outputs': [
         '<(jar_stamp)',
       ],
       'action': [
         'python', '<(DEPTH)/build/android/gyp/jar.py',
-        '--classes-dir=<(classes_dir)',
+        '--classes-dir=<(classes_final_dir)',
         '--jar-path=<(jar_path)',
         '--excluded-classes=<(jar_excluded_classes)',
         '--stamp=<(jar_stamp)',
 
         # TODO(newt): remove this once http://crbug.com/177552 is fixed in ninja.
         '--ignore=>!(echo \'>(_inputs)\' | md5sum)',
       ]
     },
     {
       'action_name': 'ant_obfuscate_<(_target_name)',
       'message': 'Obfuscating <(_target_name)',
       'inputs': [
         '<(DEPTH)/build/android/ant/apk-obfuscate.xml',
         '<(DEPTH)/build/android/ant/create-test-jar.js',
         '<(DEPTH)/build/android/gyp/util/build_utils.py',
         '<(DEPTH)/build/android/gyp/ant.py',
-        '<(compile_stamp)',
+        '<(instr_stamp)',
         '>@(proguard_flags_paths)',
       ],
       'outputs': [
         '<(obfuscate_stamp)',
       ],
       'action': [
         'python', '<(DEPTH)/build/android/gyp/ant.py',
         '-quiet',
         '-DADDITIONAL_SRC_DIRS=>(additional_src_dirs)',
         '-DANDROID_SDK_JAR=<(android_sdk_jar)',
@@ skipping 25 matching lines @@
       ],
     },
     {
       'action_name': 'dex_<(_target_name)',
       'variables': {
         'conditions': [
           ['proguard_enabled == "true"', {
             'input_paths': [ '<(obfuscate_stamp)' ],
             'proguard_enabled_input_path': '<(obfuscated_jar_path)',
           }],
+          ['emma_instrument != 0', {
+            'dex_input_paths': [ '<(emma_device_jar)' ],
+          }],
         ],
-        'input_paths': [ '<(compile_stamp)' ],
+        'input_paths': [ '<(instr_stamp)' ],
         'dex_input_paths': [ '>@(library_dexed_jars_paths)' ],
-        'dex_generated_input_dirs': [ '<(classes_dir)' ],
+        'dex_generated_input_dirs': [ '<(classes_final_dir)' ],
         'output_path': '<(dex_path)',
       },
       'includes': [ 'android/dex_action.gypi' ],
     },
     {
       'action_name': 'ant package resources',
       'message': 'Packaging resources for <(_target_name) APK.',
       'inputs': [
         '<(DEPTH)/build/android/ant/apk-package-resources.xml',
         '<(DEPTH)/build/android/gyp/util/build_utils.py',
@@ skipping 64 matching lines @@
         'python', '<(DEPTH)/build/android/gyp/ant.py',
         '-quiet',
         '-DANDROID_SDK_ROOT=<(android_sdk_root)',
         '-DANDROID_SDK_TOOLS=<(android_sdk_tools)',
         '-DAPK_NAME=<(apk_name)',
         '-DCONFIGURATION_NAME=<(CONFIGURATION_NAME)',
         '-DNATIVE_LIBS_DIR=<(apk_package_native_libs_dir)',
         '-DOUT_DIR=<(intermediate_dir)',
         '-DSOURCE_DIR=<(source_dir)',
         '-DUNSIGNED_APK_PATH=<(unsigned_apk_path)',
+        '-DEMMA_INSTRUMENT=<(emma_instrument)',
 
         '-Dbasedir=.',
         '-buildfile',
         '<(DEPTH)/build/android/ant/apk-package.xml',
 
         # Add list of inputs to the command line, so if inputs change
         # (e.g. if a Java file is removed), the command will be re-run.
         # TODO(newt): remove this once crbug.com/177552 is fixed in ninja.
         '-DTHIS_IS_IGNORED=>!(echo \'>(_inputs)\' | md5sum)',
       ]
     },
   ],
 }