Add a way for JNI registrars to specify methods to be registered for tests.

base/android/jni_registrar.cc

Index: base/android/jni_registrar.cc
diff --git a/base/android/jni_registrar.cc b/base/android/jni_registrar.cc
index 696924a09d03ef4a768f0ec06614c05bd5f8972f..637e27a8c4b46529ea31038aacb867a1f6c97ffd 100644
--- a/base/android/jni_registrar.cc
+++ b/base/android/jni_registrar.cc
@@ -4,12 +4,44 @@
 
 #include "base/android/jni_registrar.h"
 
+#include <vector>
 #include "base/logging.h"
 #include "base/android/jni_android.h"
 
 namespace base {
 namespace android {
 
+typedef std::vector<RegistrationMethod> RegistrationMethodList;
+
+// Retrieve a reference to the global RegistrationMethods list.
+RegistrationMethodList &GetRegistrationMethodList() {
+  static RegistrationMethodList test_registration_method_list;
+  return test_registration_method_list;
+}
+
+AppendRegistrationMethods::AppendRegistrationMethods(
+    const RegistrationMethod* methods, size_t count) {
+  const RegistrationMethod* end = methods + count;
+  while (methods != end) {
+    GetRegistrationMethodList().push_back(*methods);
+    LOG(ERROR) << "Adding method:" << methods->name;
+    methods++;
+  }
+}
+
+bool RegisterAllNativeMethodsForTest(JNIEnv* env) {
+  RegistrationMethodList& native_methods = GetRegistrationMethodList();
+  for (RegistrationMethodList::iterator it = native_methods.begin();
+      it != native_methods.end(); ++it) {
+    if (!it->func(env) < 0) {
+      DLOG(ERROR) << it->name << " failed registration!";
+      return false;
+    }
+    LOG(ERROR) << "Registering method:" << it->name;
+  }
+  return true;
+}
+
 bool RegisterNativeMethods(JNIEnv* env,
                            const RegistrationMethod* method,
                            size_t count) {