Fix ninja warning on iOS

gyp uses the target_name to compute the library name which means that all
targets that generate static_library must have globally unique names. Use
a different name for the mojo_test_support defined in mojo_public.gyp to
avoid name clash.

BUG=510768

Review URL: https://codereview.chromium.org/1238983003

Cr-Commit-Position: refs/heads/master@{#339502}
diff --git a/third_party/mojo/mojo_public_bindings_unittests.isolate b/third_party/mojo/mojo_public_bindings_unittests.isolate
index 4da787c..e501382 100644
--- a/third_party/mojo/mojo_public_bindings_unittests.isolate
+++ b/third_party/mojo/mojo_public_bindings_unittests.isolate
@@ -23,21 +23,21 @@
     ['OS=="win"', {
       'variables': {
         'files': [
-          '<(PRODUCT_DIR)/mojo_test_support.dll',
+          '<(PRODUCT_DIR)/mojo_public_test_support.dll',
         ],
       },
     }],
     ['OS=="linux"', {
       'variables': {
         'files': [
-          '<(PRODUCT_DIR)/lib/libmojo_test_support.so',
+          '<(PRODUCT_DIR)/lib/libmojo_public_test_support.so',
         ],
       },
     }],
     ['OS=="mac"', {
       'variables': {
         'files': [
-          '<(PRODUCT_DIR)/libmojo_test_support.dylib',
+          '<(PRODUCT_DIR)/libmojo_public_test_support.dylib',
         ],
       },
     }],