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

content/content.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,  # Use higher warning level.
     'chromium_enable_vtune_jit_for_v8%': 0,  # enable the vtune support for V8 engine.
     'directxsdk_exists': '<!(python <(DEPTH)/build/dir_exists.py ../third_party/directxsdk)',
   },
@@ skipping 400 matching lines @@
             'top_controls_state_java',
             'content_native_libraries_gen',
           ],
           'variables': {
             'java_in_dir': '../content/public/android/java',
             'jar_excluded_classes': [ '*/NativeLibraries.class' ],
             'has_java_resources': 1,
             'R_package': 'org.chromium.content',
             'R_package_relpath': 'org/chromium/content',
             'java_strings_grd': 'android_content_strings.grd',
+            'emma_instrument': '<(coverage)',
           },
           'conditions': [
             ['android_webview_build == 0', {
               'dependencies': [
                 '../third_party/eyesfree/eyesfree.gyp:eyesfree_java',
                 '../third_party/guava/guava.gyp:guava_javalib',
               ],
             }],
           ],
           'includes': [ '../build/java.gypi' ],
@@ skipping 66 matching lines @@
             'include_dirs': [
               '<(SHARED_INTERMEDIATE_DIR)/content',
             ],
           },
           'includes': [ 'content_jni.gypi' ],
         },
       ],
     }],  # OS == "android"
   ],
 }