Reland of Android: Use linker script to hide all non-JNI symbols

gpu/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//testing/libfuzzer/fuzzer_test.gni")
 import("//testing/test.gni")
 import("//build/config/ui.gni")
 
 config("gpu_implementation") {
   defines = [ "GPU_IMPLEMENTATION" ]
@@ skipping 37 matching lines @@
     "//gpu/command_buffer/client:gles2_c_lib",
     "//gpu/command_buffer/client:gles2_implementation",
     "//gpu/command_buffer/common:gles2_utils",
     "//ui/gl:gl",
   ]
 
   defines = [
     "COMMAND_BUFFER_GLES_LIB_SUPPORT_ONLY",
     "EGLAPIENTRY=",
   ]
+  if (is_android) {
+    configs -= [ "//build/config/android:hide_all_but_jni_onload" ]
+  }
   if (current_os == "win") {
     defines += [ "EGLAPI=__declspec(dllexport)" ]
   } else {
     defines += [ "EGLAPI=__attribute__((visibility(\"default\")))" ]
   }
 }
 
 test("command_buffer_gles2_tests") {
   sources = [
     "command_buffer/tests/command_buffer_gles2_tests_main.cc",
@@ skipping 351 matching lines @@
       "//base/third_party/dynamic_annotations",
       "//gpu/command_buffer/common:gles2_utils",
       "//ui/gfx/geometry",
       "//ui/gl",
       "//ui/gl:test_support",
     ]
 
     libfuzzer_options = [ "max_len=16384" ]
   }
 }