Relanding "Add apk for running content_browsertests"

content/shell/android/browsertests_apk/content_browser_tests_android.cc

+// Copyright (c) 2012 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.
+
+// This class sets up the environment for running the content browser tests
+// inside an android application.
+
+#include <android/log.h>
+
+#include "base/android/base_jni_registrar.h"
+#include "base/android/jni_android.h"
+#include "base/android/jni_string.h"
+#include "base/android/scoped_java_ref.h"
+#include "base/base_switches.h"
+#include "base/command_line.h"
+#include "base/file_path.h"
+#include "base/file_util.h"
+#include "base/logging.h"
+#include "base/string_tokenizer.h"
+#include "base/string_util.h"
+#include "base/stringprintf.h"
+#include "content/public/app/android_library_loader_hooks.h"
+#include "content/shell/android/shell_jni_registrar.h"
+#include "jni/ContentBrowserTestsActivity_jni.h"
+
+// The main function of the program to be wrapped as an apk.
+extern int main(int argc, char** argv);
+
+namespace {
+
+void ParseArgsFromString(const std::string& command_line,
+                         std::vector<std::string>* args) {
+  StringTokenizer tokenizer(command_line, kWhitespaceASCII);
+  tokenizer.set_quote_chars("\"");
+  while (tokenizer.GetNext()) {
+    std::string token;
+    RemoveChars(tokenizer.token(), "\"", &token);
+    args->push_back(token);
+  }
+}
+
+void ParseArgsFromCommandLineFile(std::vector<std::string>* args) {
+  // The test runner script writes the command line file in
+  // "/data/local/tmp".
+  static const char kCommandLineFilePath[] =
+      "/data/local/tmp/content-browser-tests-command-line";
+  FilePath command_line(kCommandLineFilePath);
+  std::string command_line_string;
+  if (file_util::ReadFileToString(command_line, &command_line_string)) {
+    ParseArgsFromString(command_line_string, args);
+  }
+}
+
+int ArgsToArgv(const std::vector<std::string>& args,
+                std::vector<char*>* argv) {
+  // We need to pass in a non-const char**.
+  int argc = args.size();
+
+  argv->resize(argc + 1);
+  for (int i = 0; i < argc; ++i)
+    (*argv)[i] = const_cast<char*>(args[i].c_str());
+  (*argv)[argc] = NULL;  // argv must be NULL terminated.
+
+  return argc;
+}
+
+class ScopedMainEntryLogger {
+ public:
+  ScopedMainEntryLogger() {
+    printf(">>ScopedMainEntryLogger\n");
+  }
+
+  ~ScopedMainEntryLogger() {
+    printf("<<ScopedMainEntryLogger\n");
+    fflush(stdout);
+    fflush(stderr);
+  }
+};
+
+}  // namespace
+
+static void RunTests(JNIEnv* env,
+                     jobject obj,
+                     jstring jfiles_dir,
+                     jobject app_context) {
+
+  // Command line basic initialization, will be fully initialized later.
+  static const char* const kInitialArgv[] = { "ContentBrowserTestsActivity" };
+  CommandLine::Init(arraysize(kInitialArgv), kInitialArgv);
+
+  // Set the application context in base.
+  base::android::ScopedJavaLocalRef<jobject> scoped_context(
+      env, env->NewLocalRef(app_context));
+  base::android::InitApplicationContext(scoped_context);
+  base::android::RegisterJni(env);
+
+  std::vector<std::string> args;
+  ParseArgsFromCommandLineFile(&args);
+
+  // We need to pass in a non-const char**.
+  std::vector<char*> argv;
+  int argc = ArgsToArgv(args, &argv);
+
+  // Fully initialize command line with arguments.
+  CommandLine::ForCurrentProcess()->AppendArguments(
+      CommandLine(argc, &argv[0]), false);
+
+  ScopedMainEntryLogger scoped_main_entry_logger;
+  main(argc, &argv[0]);
+}
+
+// This is called by the VM when the shared library is first loaded.
+JNI_EXPORT jint JNI_OnLoad(JavaVM* vm, void* reserved) {
+  base::android::InitVM(vm);
+  JNIEnv* env = base::android::AttachCurrentThread();
+
+  if (!content::RegisterLibraryLoaderEntryHook(env))
+    return -1;
+
+  if (!content::android::RegisterShellJni(env))
+    return -1;
+
+  if (!RegisterNativesImpl(env))
+    return -1;
+
+  return JNI_VERSION_1_4;
+}