Change in android Java build rules for Mojo Java content handler

See https://codereview.chromium.org/898853006 for motivation

Review URL: https://codereview.chromium.org/910143003

Cr-Commit-Position: refs/heads/master@{#315959}

build/android/gyp/javac.py

@@ -106,7 +106,8 @@ def Compile():
 _MAX_MANIFEST_LINE_LEN = 72
 
 
-def CreateManifest(manifest_path, classpath, main_class=None):
+def CreateManifest(manifest_path, classpath, main_class=None,
+                   manifest_entries=None):
   """Creates a manifest file with the given parameters.
 
   This generates a manifest file that compiles with the spec found at
@@ -117,11 +118,16 @@ def CreateManifest(manifest_path, classpath, main_class=None):
     classpath: The JAR files that should be listed on the manifest file's
       classpath.
     main_class: If present, the class containing the main() function.
+    manifest_entries: If present, a list of (key, value) pairs to add to
+      the manifest.
 
   """
   output = ['Manifest-Version: 1.0']
   if main_class:
     output.append('Main-Class: %s' % main_class)
+  if manifest_entries:
+    for k, v in manifest_entries:
+      output.append('%s: %s' % (k, v))
   if classpath:
     sanitized_paths = []
     for path in classpath:
@@ -183,6 +189,10 @@ def main(argv):
   parser.add_option(
       '--main-class',
       help='The class containing the main method.')
+  parser.add_option(
+      '--manifest-entry',
+      action='append',
+      help='Key:value pairs to add to the .jar manifest.')
 
   parser.add_option('--stamp', help='Path to touch on success.')
 
@@ -232,10 +242,13 @@ def main(argv):
         java_files)
 
     if options.jar_path:
-      if options.main_class:
+      if options.main_class or options.manifest_entry:
+        if options.manifest_entry:
+          entries = map(lambda e: e.split(":"), options.manifest_entry)
+        else:
+          entries = []
         manifest_file = os.path.join(temp_dir, 'manifest')
-        CreateManifest(manifest_file, classpath,
-                       options.main_class)
+        CreateManifest(manifest_file, classpath, options.main_class, entries)
       else:
         manifest_file = None
       jar.JarDirectory(classes_dir,

build/config/android/internal_rules.gni

@@ -665,6 +665,10 @@ template("compile_java") {
   if (defined(invoker.chromium_code)) {
     _chromium_code = invoker.chromium_code
   }
+  _manifest_entries = []
+  if (defined(invoker.manifest_entries)) {
+    _manifest_entries = invoker.manifest_entries
+  }
 
   _srcjar_deps = []
   if (defined(invoker.srcjar_deps)) {
@@ -718,6 +722,9 @@ template("compile_java") {
       "--java-srcjars=@FileArg($_rebased_build_config:javac:srcjars)",
       "--jar-excluded-classes=$_jar_excluded_patterns",
     ]
+    foreach(e, _manifest_entries) {
+      args += [ "--manifest-entry=" + e ]
+    }
     if (_chromium_code) {
       args += [ "--chromium-code=1" ]
     }
@@ -861,6 +868,9 @@ template("java_library_impl") {
     if (defined(invoker.dist_jar_path)) {
       dist_jar_path = invoker.dist_jar_path
     }
+    if (defined(invoker.manifest_entries)) {
+      manifest_entries = invoker.manifest_entries
+    }
   }
 
   if (defined(invoker.main_class)) {

build/config/android/rules.gni

@@ -998,6 +998,9 @@ template("android_library") {
     if (defined(invoker.dex_path)) {
       dex_path = invoker.dex_path
     }
+    if (defined(invoker.manifest_entries)) {
+      manifest_entries = invoker.manifest_entries
+    }
 
     supports_android = true
     requires_android = true