Know the process shared library loaded in

base/android/library_loader/library_loader_hooks.cc

 // 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.
 
 #include "base/android/library_loader/library_loader_hooks.h"
 
 #include "base/android/command_line_android.h"
 #include "base/android/jni_string.h"
 #include "base/android/library_loader/library_load_from_apk_status_codes.h"
 #include "base/at_exit.h"
@@ skipping 33 matching lines @@
 
   MAX_BROWSER_HISTOGRAM_CODE = 3,
 };
 
 RendererHistogramCode g_renderer_histogram_code = NO_PENDING_HISTOGRAM_CODE;
 
 } // namespace
 
 static void RegisterChromiumAndroidLinkerRendererHistogram(
     JNIEnv* env,
-    jclass clazz,
+    jobject jcaller,
     jboolean requested_shared_relro,
     jboolean load_at_fixed_address_failed) {
   // Note a pending histogram value for later recording.
   if (requested_shared_relro) {
     g_renderer_histogram_code = load_at_fixed_address_failed
                                 ? LFA_BACKOFF_USED : LFA_SUCCESS;
   } else {
     g_renderer_histogram_code = LFA_NOT_ATTEMPTED;
   }
 }
 
 void RecordChromiumAndroidLinkerRendererHistogram() {
   if (g_renderer_histogram_code == NO_PENDING_HISTOGRAM_CODE)
     return;
   // Record and release the pending histogram value.
   UMA_HISTOGRAM_ENUMERATION("ChromiumAndroidLinker.RendererStates",
                             g_renderer_histogram_code,
                             MAX_RENDERER_HISTOGRAM_CODE);
   g_renderer_histogram_code = NO_PENDING_HISTOGRAM_CODE;
 }
 
 static void RecordChromiumAndroidLinkerBrowserHistogram(
     JNIEnv* env,
-    jclass clazz,
+    jobject jcaller,
     jboolean is_using_browser_shared_relros,
     jboolean load_at_fixed_address_failed,
     jint library_load_from_apk_status) {
   // For low-memory devices, record whether or not we successfully loaded the
   // browser at a fixed address. Otherwise just record a normal invocation.
   BrowserHistogramCode histogram_code;
   if (is_using_browser_shared_relros) {
     histogram_code = load_at_fixed_address_failed
                      ? LOW_MEMORY_LFA_BACKOFF_USED : LOW_MEMORY_LFA_SUCCESS;
   } else {
     histogram_code = NORMAL_LRA_SUCCESS;
   }
   UMA_HISTOGRAM_ENUMERATION("ChromiumAndroidLinker.BrowserStates",
                             histogram_code,
                             MAX_BROWSER_HISTOGRAM_CODE);
 
   // Record the device support for loading a library directly from the APK file.
   UMA_HISTOGRAM_ENUMERATION("ChromiumAndroidLinker.LibraryLoadFromApkStatus",
                             library_load_from_apk_status,
                             LIBRARY_LOAD_FROM_APK_STATUS_CODES_MAX);
 }
 
 void SetLibraryLoadedHook(LibraryLoadedHook* func) {
   g_registration_callback = func;
 }
 
-static void InitCommandLine(JNIEnv* env, jclass clazz,
+static void InitCommandLine(JNIEnv* env,
+                            jobject jcaller,
                             jobjectArray init_command_line) {
   InitNativeCommandLineFromJavaArray(env, init_command_line);
 }
 
-static jboolean LibraryLoaded(JNIEnv* env, jclass clazz) {
+static jboolean LibraryLoaded(JNIEnv* env, jobject jcaller) {
   if (g_registration_callback == NULL) {
     return true;
   }
-  return g_registration_callback(env, clazz);
+  return g_registration_callback(env, NULL);
 }
 
 void LibraryLoaderExitHook() {
   if (g_at_exit_manager) {
     delete g_at_exit_manager;
     g_at_exit_manager = NULL;
   }
 }
 
 bool RegisterLibraryLoaderEntryHook(JNIEnv* env) {
   // We need the AtExitManager to be created at the very beginning.
   g_at_exit_manager = new base::AtExitManager();
 
   return RegisterNativesImpl(env);
 }
 
 void SetVersionNumber(const char* version_number) {
   g_library_version_number = strdup(version_number);
 }
 
-jstring GetVersionNumber(JNIEnv* env, jclass clazz) {
+jstring GetVersionNumber(JNIEnv* env, jobject jcaller) {
   return ConvertUTF8ToJavaString(env, g_library_version_number).Release();
 }
 
+LibraryProcessType GetLibraryProcessType(JNIEnv* env) {
+  return static_cast<LibraryProcessType>(
+      Java_LibraryLoader_getLibraryProcessType(env));
+}
+
 }  // namespace android
 }  // namespace base