[Android] Auto-generate API 14 resources from the existing API 17 resources.

build/java.gypi

Index: build/java.gypi
diff --git a/build/java.gypi b/build/java.gypi
index fdcbe576652a7438bd60734f59797f7e171c5215..9d5bb685836295ddfb5f5428e72ddc4d51c6b87b 100644
--- a/build/java.gypi
+++ b/build/java.gypi
@@ -83,6 +83,7 @@
       'variables': {
         'res_dir': '<(java_in_dir)/res',
         'res_crunched_dir': '<(intermediate_dir)/res_crunched',
+        'res_mirrored_dir': '<(intermediate_dir)/res_mirrored',
         'res_input_dirs': ['<(res_dir)', '<@(res_extra_dirs)'],
         'resource_input_paths': ['<!@(find <(res_dir) -type f)'],
         'R_dir': '<(intermediate_dir)/java_R',
@@ -105,7 +106,9 @@
           # Dependent APKs include this target's resources via
           # additional_res_dirs, additional_res_packages, and
           # additional_R_text_files.
-          'additional_res_dirs': ['<(res_crunched_dir)', '<@(res_input_dirs)'],
+          'additional_res_dirs': ['<(res_crunched_dir)',
+                                  '<(res_mirrored_dir)',
+                                  '<@(res_input_dirs)'],
           'additional_res_packages': ['<(R_package)'],
           'additional_R_text_files': ['<(R_text_file)'],
         },
@@ -148,6 +151,7 @@
             '<(DEPTH)/build/android/gyp/process_resources.py',
             '>@(resource_input_paths)',
             '>@(dependencies_res_files)',
+            '<(res_mirrored_dir)',
           ],
           'outputs': [
             '<(R_stamp)',
@@ -171,6 +175,24 @@
             '--ignore=>!(echo \'>(_inputs)\' | md5sum)',
           ],
         },
+        # Generate API 14 resources.
+        {
+          'action_name': 'generate_api_14_resources_<(_target_name)',
+          'message': 'Generating Android API 14 resources <(_target_name)',
+          'inputs': [
+            '<(DEPTH)/build/android/gyp/util/build_utils.py',
+            '<(DEPTH)/build/android/gyp/mirror_resources.py',
+            '>@(resource_input_paths)',
+          ],
+          'outputs': [
+            '<(res_mirrored_dir)',
+          ],
+          'action': [
+            'python', '<(DEPTH)/build/android/gyp/mirror_resources.py',
+            '--res-dir=<(res_dir)',
+            '--res-mirrored-dir=<(res_mirrored_dir)',
+          ]
+        },
       ],
     }],
   ],