Add test jar generation logic for ant builds.

build/all_android.gyp

Index: build/all_android.gyp
diff --git a/build/all_android.gyp b/build/all_android.gyp
index 84345dc140c146bc9b87290de82bf555a7b8b7c2..cc140ba0af669ef31331b517fef82e458c441cc2 100644
--- a/build/all_android.gyp
+++ b/build/all_android.gyp
@@ -108,5 +108,38 @@
         '../content/content.gyp:content_browsertests',
       ],
     },
+    {
+      # Target for creating common output build directories.
+      # Creating output dirs beforehand ensures that build
+      # scripts can assume these folders to exist and there
+      # are no race conditions resulting from build scripts
+      # trying to create these directories.
+      # The build/java.gypi target depends on this target.
+      'target_name': 'build_output_dirs',
+      'type': 'none',
+      'actions': [
+        {
+        'action_name': 'create_java_output_dirs',
+        'variables' : {
+          'output_dirs' : [
+            '<(PRODUCT_DIR)/apks',
+          '<(PRODUCT_DIR)/lib.java',

[Yaron, 2012/09/10 19:58:10]

Nit: indentation is off throughout this target.

+          '<(PRODUCT_DIR)/test.lib.java',
+            ]
+          },
+        'inputs' : [
+          '<(PRODUCT_DIR)'
+          ],
+        'outputs': [
+          '<@(output_dirs)'
+          ],
+        'action': [
+          'mkdir',
+        '-p',
+        '<@(output_dirs)',
+          ],
+        },
+      ],
+    }, # build_output_dirs
   ],  # targets
 }