Fixed issue that the change of header file didn't rebuild the template file.

net/net.gyp

Index: net/net.gyp
diff --git a/net/net.gyp b/net/net.gyp
index f15dbcde625a8ea939d0c0776a4f26e15b792d5c..fdb7b8ed4069cb130d9f81891e2b0e8cc38f5f75 100644
--- a/net/net.gyp
+++ b/net/net.gyp
@@ -2362,11 +2362,11 @@
           'target_name': 'net_errors_java',
           'type': 'none',
           'sources': [
-            'base/net_error_list.h',
             'android/java/NetError.template',
           ],
           'variables': {
             'package_name': 'org.chromium.net',
+            'template_deps': ['base/net_error_list.h'],
           },
           'includes': [ '../build/android/java_cpp_template.gypi' ],
         },
@@ -2374,11 +2374,11 @@
           'target_name': 'certificate_mime_types_java',
           'type': 'none',
           'sources': [
-            'base/mime_util_certificate_type_list.h',
             'android/java/CertificateMimeType.template',
           ],
           'variables': {
             'package_name': 'org.chromium.net',
+            'template_deps': ['base/mime_util_certificate_type_list.h'],
           },
           'includes': [ '../build/android/java_cpp_template.gypi' ],
         },