android: Move launcher_android.cc to helper

content/browser/child_process_launcher_helper_android.cc

Index: content/browser/child_process_launcher_helper_android.cc
diff --git a/content/browser/child_process_launcher_helper_android.cc b/content/browser/child_process_launcher_helper_android.cc
index 175fe9018cc2705f377670c322a8f11b738b10d0..a452859f997892d9c292fe30acb7417ee44f41bb 100644
--- a/content/browser/child_process_launcher_helper_android.cc
+++ b/content/browser/child_process_launcher_helper_android.cc
@@ -2,15 +2,19 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "content/browser/child_process_launcher_helper.h"
+#include "content/browser/child_process_launcher_helper_android.h"
 
 #include <memory>
 
 #include "base/android/apk_assets.h"
+#include "base/android/context_utils.h"
+#include "base/android/jni_array.h"
+#include "base/android/unguessable_token_android.h"
 #include "base/i18n/icu_util.h"
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
-#include "content/browser/android/child_process_launcher_android.h"
+#include "content/browser/android/scoped_surface_request_manager.h"
+#include "content/browser/child_process_launcher_helper.h"
 #include "content/browser/child_process_launcher_helper_posix.h"
 #include "content/browser/file_descriptor_info_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
@@ -19,12 +23,91 @@
 #include "content/public/common/content_descriptors.h"
 #include "content/public/common/content_switches.h"
 #include "gin/v8_initializer.h"
+#include "gpu/ipc/common/gpu_surface_tracker.h"
+#include "jni/ChildProcessLauncher_jni.h"
+
+using base::android::AttachCurrentThread;
+using base::android::JavaParamRef;
+using base::android::ScopedJavaGlobalRef;
+using base::android::ScopedJavaLocalRef;
+using base::android::ToJavaArrayOfStrings;
 
 namespace content {
+
+typedef base::Callback<void(base::ProcessHandle, int /* launch result */)>
+    StartChildProcessCallback;
+
 namespace internal {
 
 namespace {
 
+// Starts a process as a child process spawned by the Android ActivityManager.
+// The created process handle is returned to the |callback| on success, 0 is
+// returned if the process could not be created.
+void StartChildProcess(const base::CommandLine::StringVector& argv,
+                       int child_process_id,
+                       content::FileDescriptorInfo* files_to_register,
+                       const StartChildProcessCallback& callback) {
+  JNIEnv* env = AttachCurrentThread();
+  DCHECK(env);
+
+  // Create the Command line String[]
+  ScopedJavaLocalRef<jobjectArray> j_argv = ToJavaArrayOfStrings(env, argv);
+
+  size_t file_count = files_to_register->GetMappingSize();
+  DCHECK(file_count > 0);
+
+  ScopedJavaLocalRef<jclass> j_file_info_class = base::android::GetClass(
+      env, "org/chromium/content/common/FileDescriptorInfo");
+  ScopedJavaLocalRef<jobjectArray> j_file_infos(
+      env, env->NewObjectArray(file_count, j_file_info_class.obj(), NULL));
+  base::android::CheckException(env);
+
+  for (size_t i = 0; i < file_count; ++i) {
+    int fd = files_to_register->GetFDAt(i);
+    PCHECK(0 <= fd);
+    int id = files_to_register->GetIDAt(i);
+    const auto& region = files_to_register->GetRegionAt(i);
+    bool auto_close = files_to_register->OwnsFD(fd);
+    ScopedJavaLocalRef<jobject> j_file_info =
+        Java_ChildProcessLauncher_makeFdInfo(env, id, fd, auto_close,
+                                             region.offset, region.size);
+    PCHECK(j_file_info.obj());
+    env->SetObjectArrayElement(j_file_infos.obj(), i, j_file_info.obj());
+    if (auto_close) {
+      ignore_result(files_to_register->ReleaseFD(fd).release());
+    }
+  }
+
+  constexpr int param_key = 0;  // TODO(boliu): Use this.
+  Java_ChildProcessLauncher_start(
+      env, base::android::GetApplicationContext(), param_key, j_argv,
+      child_process_id, j_file_infos,
+      reinterpret_cast<intptr_t>(new StartChildProcessCallback(callback)));
+}
+
+// Stops a child process based on the handle returned from StartChildProcess.
+void StopChildProcess(base::ProcessHandle handle) {
+  JNIEnv* env = AttachCurrentThread();
+  DCHECK(env);
+  Java_ChildProcessLauncher_stop(env, static_cast<jint>(handle));
+}
+
+bool IsChildProcessOomProtected(base::ProcessHandle handle) {
+  JNIEnv* env = AttachCurrentThread();
+  DCHECK(env);
+  return Java_ChildProcessLauncher_isOomProtected(env,
+                                                  static_cast<jint>(handle));
+}
+
+void SetChildProcessInForeground(base::ProcessHandle handle,
+                                 bool in_foreground) {
+  JNIEnv* env = AttachCurrentThread();
+  DCHECK(env);
+  return Java_ChildProcessLauncher_setInForeground(
+      env, static_cast<jint>(handle), static_cast<jboolean>(in_foreground));
+}
+
 // Callback invoked from Java once the process has been started.
 void ChildProcessStartedCallback(
     ChildProcessLauncherHelper* helper,
@@ -181,4 +264,62 @@ base::File OpenFileToShare(const base::FilePath& path,
 }
 
 }  // namespace internal
+
+// Called from ChildProcessLauncher.java when the ChildProcess was
+// started.
+// |client_context| is the pointer to StartChildProcessCallback which was
+// passed in from StartChildProcess.
+// |handle| is the processID of the child process as originated in Java, 0 if
+// the ChildProcess could not be created.
+static void OnChildProcessStarted(JNIEnv*,
+                                  const JavaParamRef<jclass>&,
+                                  jlong client_context,
+                                  jint handle) {
+  StartChildProcessCallback* callback =
+      reinterpret_cast<StartChildProcessCallback*>(client_context);
+  int launch_result = (handle == base::kNullProcessHandle)
+                          ? LAUNCH_RESULT_FAILURE
+                          : LAUNCH_RESULT_SUCCESS;
+  callback->Run(static_cast<base::ProcessHandle>(handle), launch_result);
+  delete callback;
+}
+
+void CompleteScopedSurfaceRequest(JNIEnv* env,
+                                  const JavaParamRef<jclass>& clazz,
+                                  const JavaParamRef<jobject>& token,
+                                  const JavaParamRef<jobject>& surface) {
+  base::UnguessableToken requestToken =
+      base::android::UnguessableTokenAndroid::FromJavaUnguessableToken(env,
+                                                                       token);
+  if (!requestToken) {
+    DLOG(ERROR) << "Received invalid surface request token.";
+    return;
+  }
+
+  DCHECK(!BrowserThread::CurrentlyOn(BrowserThread::UI));
+
+  ScopedJavaGlobalRef<jobject> jsurface;
+  jsurface.Reset(env, surface);
+  ScopedSurfaceRequestManager::GetInstance()->FulfillScopedSurfaceRequest(
+      requestToken, gl::ScopedJavaSurface(jsurface));
+}
+
+jboolean IsSingleProcess(JNIEnv* env, const JavaParamRef<jclass>& clazz) {
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kSingleProcess);
+}
+
+base::android::ScopedJavaLocalRef<jobject> GetViewSurface(
+    JNIEnv* env,
+    const base::android::JavaParamRef<jclass>& jcaller,
+    jint surface_id) {
+  gl::ScopedJavaSurface surface_view =
+      gpu::GpuSurfaceTracker::GetInstance()->AcquireJavaSurface(surface_id);
+  return base::android::ScopedJavaLocalRef<jobject>(surface_view.j_surface());
+}
+
+bool RegisterChildProcessLauncher(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
 }  // namespace content