Re-land "[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

Originally landed as https://codereview.chromium.org/11659006/
This can be re-landed as of https://codereview.chromium.org/11880050/

BUG=167248
TBR=yfriedman@chromium.org,thakis,jam@chromium.org,cjhopman,shashishekhar@chromium.org

Review URL: https://codereview.chromium.org/11967005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@177170 0039d316-1c4b-4281-b951-d872f2087c98

5 files changed, 78 insertions, 14 deletions

diff --git a/build/java.gypi b/build/java.gypi
index f958132..bd3976c 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': [
@@ -65,17 +67,20 @@
     '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',
         'R_text_file': '<(R_dir)/R.txt',
         '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': {
@@ -87,15 +92,40 @@
 
           # 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)',
@@ -110,7 +140,7 @@
             '--R-package', '<(R_package)',
             '--R-dir', '<(R_dir)',
             '--res-dir', '<(res_dir)',
-            '--crunched-res-dir', '<(crunched_res_dir)',
+            '--crunched-res-dir', '<(out_res_dir)',
           ],
         },
       ],
diff --git a/build/java_apk.gypi b/build/java_apk.gypi
index 841a469..a887663 100644
--- a/build/java_apk.gypi
+++ b/build/java_apk.gypi
@@ -57,6 +57,8 @@
 #  resource_dir - The directory for resources.
 #  R_package - A custom Java package to generate the resource file R.java in.
 #    By default, the package given in AndroidManifest.xml will be used.
+#  java_strings_grd - The name of the grd file from which to generate localized
+#    strings.xml files, if any.
 
 {
   'variables': {
@@ -76,6 +78,8 @@
     'additional_res_dirs': [],
     'additional_res_packages': [],
     'is_test_apk%': 0,
+    'java_strings_grd%': '',
+    'grit_grd_file%': '',
   },
   'sources': [
       '<@(native_libs_paths)'
@@ -109,6 +113,36 @@
       ],
     },
   ],
+  'conditions': [
+    ['R_package != ""', {
+      'variables': {
+        # We generate R.java in package R_package (in addition to the package
+        # listed in the AndroidManifest.xml, which is unavoidable).
+        'additional_res_dirs': ['<(DEPTH)/build/android/ant/empty/res'],
+        'additional_res_packages': ['<(R_package)'],
+        'additional_R_text_files': ['<(PRODUCT_DIR)/<(package_name)/R.txt'],
+      },
+    }],
+    ['java_strings_grd != ""', {
+      'variables': {
+        'out_res_dir': '<(SHARED_INTERMEDIATE_DIR)/<(package_name)_apk/res',
+        'additional_res_dirs': ['<(out_res_dir)'],
+        # grit_grd_file is used by grit_action.gypi, included below.
+        'grit_grd_file': '<(java_in_dir)/strings/<(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': [
     {
       'action_name': 'ant_<(package_name)_apk',
@@ -129,6 +163,14 @@
         ['resource_dir!=""', {
           'inputs': ['<!@(find <(java_in_dir)/<(resource_dir) -name "*")']
         }],
+        ['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))',
+          ],
+        }],
         ['is_test_apk == 1', {
           'variables': {
             'additional_res_dirs=': [],
@@ -181,15 +223,4 @@
       ]
     },
   ],
-  'conditions': [
-    ['R_package != ""', {
-      'variables': {
-        # We generate R.java in package R_package (in addition to the package
-        # listed in the AndroidManifest.xml, which is unavoidable).
-        'additional_res_dirs': ['<(DEPTH)/build/android/ant/empty/res'],
-        'additional_res_packages': ['<(R_package)'],
-        'additional_R_text_files': ['<(PRODUCT_DIR)/<(package_name)/R.txt'],
-      },
-    }],
-  ],
 }
diff --git a/chrome/chrome.gyp b/chrome/chrome.gyp
index 4b9c83c..f05fee7 100644
--- a/chrome/chrome.gyp
+++ b/chrome/chrome.gyp
@@ -1082,6 +1082,7 @@
             'has_java_resources': 1,
             'R_package': 'org.chromium.chrome',
             'R_package_relpath': 'org/chromium/chrome',
+            'java_strings_grd': 'android_chrome_strings.grd',
           },
           'includes': [
             '../build/java.gypi',
diff --git a/content/content.gyp b/content/content.gyp
index cb1f23b..ae5334a4 100644
--- a/content/content.gyp
+++ b/content/content.gyp
@@ -303,6 +303,7 @@
             'has_java_resources': 1,
             'R_package': 'org.chromium.content',
             'R_package_relpath': 'org/chromium/content',
+            'java_strings_grd': 'android_content_strings.grd',
           },
           'conditions': [
             ['android_build_type == 0', {
diff --git a/ui/ui.gyp b/ui/ui.gyp
index 0f1e392..f074cdb 100644
--- a/ui/ui.gyp
+++ b/ui/ui.gyp
@@ -889,6 +889,7 @@
              'has_java_resources': 1,
              'R_package': 'org.chromium.ui',
              'R_package_relpath': 'org/chromium/ui',
+             'java_strings_grd': 'android_ui_strings.grd',
            },
            'dependencies': [
              '../base/base.gyp:base_java',