[Android] Generate localized strings.xml files at build time.

This generates localized strings.xml files (e.g.
values-fr/strings.xml) from grd and xtb files at build time. This
means we no longer need to check in localized strings.xml files. Note:
the xtb files are empty until translations are available.

Benefits:
 - 41 fewer extraneous results when grepping Java string IDs
 - Switching from maintaining strings in strings.xml over to using a
   grd file is One Trivial CL* away: just include English in the list
   of languages for which we generate strings.xml files.

*Restrictions may apply

BUG=167248

Review URL: https://codereview.chromium.org/11659006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@176134 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 33 insertions, 3 deletions

diff --git a/build/java.gypi b/build/java.gypi
index a13c88f..910a2a0 100644
--- a/build/java.gypi
+++ b/build/java.gypi
@@ -44,6 +44,8 @@
 #  R_package - The java package in which the R class (which maps resources to
 #    integer IDs) should be generated, e.g. org.chromium.content.
 #  R_package_relpath - Same as R_package, but replace each '.' with '/'.
+#  java_strings_grd - The name of the grd file from which to generate localized
+#    strings.xml files, if any.
 
 {
   'dependencies': [
@@ -65,16 +67,19 @@
     'generated_R_dirs': [],
     'additional_R_files': [],
     'has_java_resources%': 0,
+    'java_strings_grd%': '',
   },
   'conditions': [
     ['has_java_resources == 1', {
       'variables': {
         'res_dir': '<(java_in_dir)/res',
-        'crunched_res_dir': '<(SHARED_INTERMEDIATE_DIR)/<(package_name)/res',
+        'out_res_dir': '<(SHARED_INTERMEDIATE_DIR)/<(package_name)/res',
         'R_dir': '<(SHARED_INTERMEDIATE_DIR)/<(package_name)/java_R',
         'R_file': '<(R_dir)/<(R_package_relpath)/R.java',
         'generated_src_dirs': ['<(R_dir)'],
         'additional_input_paths': ['<(R_file)'],
+        # grit_grd_file is used by grit_action.gypi, included below.
+        'grit_grd_file': '<(java_in_dir)/strings/<(java_strings_grd)',
       },
       'all_dependent_settings': {
         'variables': {
@@ -85,15 +90,40 @@
 
           # Dependent APKs include this target's resources via
           # additional_res_dirs and additional_res_packages.
-          'additional_res_dirs': ['<(crunched_res_dir)', '<(res_dir)'],
+          'additional_res_dirs': ['<(out_res_dir)', '<(res_dir)'],
           'additional_res_packages': ['<(R_package)'],
         },
       },
+      'conditions': [
+        ['java_strings_grd != ""', {
+          'actions': [
+            {
+              'action_name': 'generate_localized_strings_xml',
+              'variables': {
+                'grit_out_dir': '<(out_res_dir)',
+                # resource_ids is unneeded since we don't generate .h headers.
+                'grit_resource_ids': '',
+              },
+              'includes': ['../build/grit_action.gypi'],
+            },
+          ],
+        }],
+      ],
       'actions': [
         # Generate R.java and crunch image resources.
         {
           'action_name': 'process_resources',
           'message': 'processing resources for <(package_name)',
+          'conditions': [
+            ['java_strings_grd != ""', {
+              'inputs': [
+                # TODO(newt): replace this with .../values/strings.xml once
+                # the English strings.xml is generated as well? That would be
+                # simpler and faster and should be equivalent.
+                '<!@pymod_do_main(grit_info <@(grit_defines) --outputs "<(out_res_dir)" <(grit_grd_file))',
+              ],
+            }],
+          ],
           'inputs': [
             '<(DEPTH)/build/android/process_resources.py',
             '<!@(find <(res_dir) -type f)',
@@ -108,7 +138,7 @@
             '--R-package', '<(R_package)',
             '--R-dir', '<(R_dir)',
             '--res-dir', '<(res_dir)',
-            '--crunched-res-dir', '<(crunched_res_dir)',
+            '--crunched-res-dir', '<(out_res_dir)',
           ],
         },
       ],