Don't share renderers between unrelated tabs on Android.

content/browser/android/browser_startup_controller.cc

 // Copyright 2013 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 "content/browser/android/browser_startup_controller.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "content/browser/android/content_startup_flags.h"
 
@@ skipping 10 matching lines @@
   JNIEnv* env = base::android::AttachCurrentThread();
   Java_BrowserStartupController_browserStartupComplete(env, result);
 }
 
 bool RegisterBrowserStartupController(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 static void SetCommandLineFlags(JNIEnv* env,
                                 jclass clazz,
-                                jint max_render_process_count,
+                                jboolean single_process,
                                 jstring plugin_descriptor) {
   std::string plugin_str =
       (plugin_descriptor == NULL
            ? std::string()
            : base::android::ConvertJavaStringToUTF8(env, plugin_descriptor));
-  SetContentCommandLineFlags(max_render_process_count, plugin_str);
+  SetContentCommandLineFlags(static_cast<bool>(single_process), plugin_str);
 }
 
 static jboolean IsOfficialBuild(JNIEnv* env, jclass clazz) {
 #if defined(OFFICIAL_BUILD)
   return true;
 #else
   return false;
 #endif
 }
 
 static jboolean IsPluginEnabled(JNIEnv* env, jclass clazz) {
 #if defined(ENABLE_PLUGINS)
   return true;
 #else
   return false;
 #endif
 }
 
 }  // namespace content