Revert of Native SSID extraction moved to platform code on Android (patchset #8 id:140001 of https://codereview.chromium.org/1633733005/ )

Reason for revert:
Causes instant crash on Android KK, L, and M.

Original issue's description:
> On Android, move Wifi SSID extraction to a Java implementation
>
> On some Android devices, the device will restart right
> after the browser is launched. This is due to a kernel bug on
> these devices when using the Linux GetWifiSSID implementation,
> which causes a kernel panic and device restart.
>
> To avoid this, a Java-based implementation is used for Android
> devices, which avoids this. Examples of affected devices include:
> HTC One S
> Lenovo A820
> Asus ZenFone 2
> MediaPad 10 FHD
>
> R=bengr@chromium.org,rch@chromium.org
> BUG=555067
> TEST=Take the problem device, install browser and start it, wait for
> 10 seconds. Make 10 experiments, cleaning data before each run.
> Device should not reboot.

TBR=bengr@chromium.org,rch@chromium.org,rsleevi@chromium.org,ripp@yandex-team.ru
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=555067

Review URL: https://codereview.chromium.org/1688103002

Cr-Commit-Position: refs/heads/master@{#374833}

7 files changed, 0 insertions, 61 deletions

diff --git a/net/android/java/src/org/chromium/net/AndroidNetworkLibrary.java b/net/android/java/src/org/chromium/net/AndroidNetworkLibrary.java
index 0bc1958..96a9320 100644
--- a/net/android/java/src/org/chromium/net/AndroidNetworkLibrary.java
+++ b/net/android/java/src/org/chromium/net/AndroidNetworkLibrary.java
@@ -9,8 +9,6 @@ import android.content.Context;
 import android.content.Intent;
 import android.net.ConnectivityManager;
 import android.net.NetworkInfo;
-import android.net.wifi.WifiInfo;
-import android.net.wifi.WifiManager;
 import android.security.KeyChain;
 import android.telephony.TelephonyManager;
 import android.util.Log;
@@ -230,34 +228,4 @@ class AndroidNetworkLibrary {
         NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
         return networkInfo.isRoaming();
     }
-
-    /*
-     * Returns the current SSID if the device is connected to a Wi-Fi network.
-     */
-    @CalledByNative
-    private static String getWifiSSID(Context context) {
-        WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
-        WifiInfo wifiInfo = wifiManager.getConnectionInfo();
-
-        if (wifiInfo == null) {
-            return "";
-        }
-
-        String ssid = wifiInfo.getSSID();
-
-        if (ssid == null || "<unknown ssid>".equals(ssid)) {
-            return "";
-        }
-
-        return removeSurroundingQuotes(ssid);
-    }
-
-    private static String removeSurroundingQuotes(String string) {
-        if (string.length() > 2 && string.charAt(0) == '\"'
-                && string.charAt(string.length() - 1) == '\"') {
-            return string.substring(1, string.length() - 1);
-        }
-
-        return string;
-    }
 }
diff --git a/net/android/network_library.cc b/net/android/network_library.cc
index 6837ddc..eb2376e 100644
--- a/net/android/network_library.cc
+++ b/net/android/network_library.cc
@@ -143,13 +143,6 @@ bool GetIsRoaming() {
       base::android::GetApplicationContext());
 }
 
-std::string GetWifiSSID() {
-  return base::android::ConvertJavaStringToUTF8(
-      Java_AndroidNetworkLibrary_getWifiSSID(
-          base::android::AttachCurrentThread(),
-          base::android::GetApplicationContext()));
-}
-
 bool RegisterNetworkLibrary(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
diff --git a/net/android/network_library.h b/net/android/network_library.h
index 941ec5da..ddfb5e9 100644
--- a/net/android/network_library.h
+++ b/net/android/network_library.h
@@ -82,9 +82,6 @@ NET_EXPORT std::string GetTelephonySimOperator();
 // true, it suggests that use of data may incur extra costs.
 NET_EXPORT bool GetIsRoaming();
 
-// Returns the current SSID if device is connected to a Wi-Fi network.
-NET_EXPORT std::string GetWifiSSID();
-
 // Register JNI methods
 NET_EXPORT bool RegisterNetworkLibrary(JNIEnv* env);
 
diff --git a/net/android/unittest_support/AndroidManifest.xml b/net/android/unittest_support/AndroidManifest.xml
index bf1cf4e..d538c50 100644
--- a/net/android/unittest_support/AndroidManifest.xml
+++ b/net/android/unittest_support/AndroidManifest.xml
@@ -11,7 +11,6 @@ found in the LICENSE file.
       android:versionName="1.0">
 
     <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="23" />
-    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
     <uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS"/>
     <uses-permission android:name="android.permission.BLUETOOTH"/>
     <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
diff --git a/net/base/network_interfaces_android.cc b/net/base/network_interfaces_android.cc
deleted file mode 100644
index 8f18fd7..0000000
--- a/net/base/network_interfaces_android.cc
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright 2016 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 "net/base/network_interfaces.h"
-
-#include "net/android/network_library.h"
-
-namespace net {
-
-std::string GetWifiSSID() {
-  return android::GetWifiSSID();
-}
-
-}  // namespace net
diff --git a/net/base/network_interfaces_linux.cc b/net/base/network_interfaces_linux.cc
index 03030c9..8aea321 100644
--- a/net/base/network_interfaces_linux.cc
+++ b/net/base/network_interfaces_linux.cc
@@ -215,7 +215,6 @@ bool GetNetworkList(NetworkInterfaceList* networks, int policy) {
       &internal::AddressTrackerLinux::GetInterfaceName);
 }
 
-#if !defined(OS_ANDROID)
 std::string GetWifiSSID() {
   NetworkInterfaceList networks;
   if (GetNetworkList(&networks, INCLUDE_HOST_SCOPE_VIRTUAL_INTERFACES)) {
@@ -224,6 +223,5 @@ std::string GetWifiSSID() {
   }
   return "";
 }
-#endif  // !defined(OS_ANDROID)
 
 }  // namespace net
diff --git a/net/net.gypi b/net/net.gypi
index e4686d9..52f5735 100644
--- a/net/net.gypi
+++ b/net/net.gypi
@@ -503,7 +503,6 @@
       'base/network_delegate.h',
       'base/network_delegate_impl.cc',
       'base/network_delegate_impl.h',
-      'base/network_interfaces_android.cc',
       'base/network_interfaces_linux.cc',
       'base/network_interfaces_mac.cc',
       'base/network_interfaces_win.cc',