Let Android port access properly sized images

build/android/java_cpp_template.gypi

Index: build/android/java_cpp_template.gypi
diff --git a/build/android/java_cpp_template.gypi b/build/android/java_cpp_template.gypi
index 6233e6aef9180f8a5ff75571f77ab62375fd6945..fe4238af84fd700979748a2d62bba311d4fc5435 100644
--- a/build/android/java_cpp_template.gypi
+++ b/build/android/java_cpp_template.gypi
@@ -34,13 +34,18 @@
     'include_path%': '<(DEPTH)',
     'output_dir': '<(SHARED_INTERMEDIATE_DIR)/templates/<(package_name)',
   },
-  # Ensure that the output directory is used in the class path
-  # when building targets that depend on this one.
   'direct_dependent_settings': {
     'variables': {
+      # Ensure that the output directory is used in the class path
+      # when building targets that depend on this one.
       'generated_src_dirs': [
         '<(output_dir)/',
       ],
+      # Ensure dependents are rebuilt when sources for this rule change.
+      'additional_input_paths': [
+        '<@(_sources)',
+        '<@(template_deps)',
+      ],
     },
   },
   # Define a single rule that will be apply to each .template file