Issue 6750 - Update libadblockplus dependency to revision hg:4f6413dbcf2e

README.md

 Adblock Android SDK
 ================================
 
 An Android library project, tests, settings fragments and demo application for AdblockWebView.
 
 ## Updating the dependencies
 
 Adblock Android SDK has dependencies that aren't in this repository.
 To update those, call:
 
     ./ensure_dependencies.py
 
 ## Library
 
 An Android library that provides the core functionality of Adblock Plus.
 You can find it in the 'adblock-android' directory.
 
 ### Building
 
 #### Requirements
 
 * [The Android SDK](https://developer.android.com/sdk)
 * Android SDK Build tools 25.0.0
 * [The Android NDK, 16b](https://developer.android.com/ndk)
 
 Edit 'buildToolsVersion' in 'build.gradle' files if necessary.
 
+#### Building of libadblockplus
+
+First, we need to build `V8` required for `libadblockplus`.
+See `libadblockplus/README` or V8 documentation on how to build V8 or
+fetch precompiled one. Run in 'libadblockplus' directory:
+
+    make TARGET_OS=android ABP_TARGET_ARCH=arm Configuration=release get-prebuilt-v8
+    make TARGET_OS=android ABP_TARGET_ARCH=ia32 Configuration=release get-prebuilt-v8
+
+Then we can build `libadblockplus`:
+
+    make TARGET_OS=android ABP_TARGET_ARCH=arm Configuration=release
+    make TARGET_OS=android ABP_TARGET_ARCH=ia32 Configuration=release
+
 #### Building from command-line
 
 In the project root directory create the file _local.properties_ and set
 _sdk.dir_ and _ndk.dir_ to where you installed it, e.g.:
 
     sdk.dir = /some/where/sdk
     ndk.dir = /some/where/ndk
 
 In the project root directory run:
 
@@ skipping 20 matching lines @@
 Note
 
     [Configuration] Building project in /tmp
 
 output while building
 
 ### Building with prebuilt shared V8
 
 This can be desired to use product's V8 (let's say Chromium) instead of built-in V8.
 Put prebuilt shared V8 library file(s) in ARCH directories and set `SHARED_V8_LIB_FILENAMES`
-environment variable before building. You can pass multiple filenames, separated with space.
+environment variable and `SHARED_V8_LIB_DIR` before building.
+You can pass multiple filenames in `SHARED_V8_LIB_FILENAMES`, separated with space.
 Libadblockplus is required to be linked with that library file(s).
 
 For example:
 
-    SHARED_V8_LIB_FILENAMES=libv8.cr.so ./gradlew clean assemble
+    SHARED_V8_LIB_FILENAMES=libv8.cr.so SHARED_V8_LIB_DIR="/tmp/shared_v8" ./gradlew clean assembleAbi_arm
     
 or
 
-    SHARED_V8_LIB_FILENAMES="libv8.cr.so libfoo.so" ./gradlew clean assemble
+    SHARED_V8_LIB_FILENAMES="libv8.cr.so libv8_libbase.cr.so libv8_libplatform.cr.so" SHARED_V8_LIB_DIR="/tmp/shared_v8" ./gradlew clean assembleAbi_arm
     
 for multiple library files.
 
 Note
   
     [Configuration] Excluding shared v8 library libv8.cr.so from AAR
     ...
-    [Configuration] Linking dynamically with shared v8 library ./libadblockplus-binaries/android_armeabi-v7a/libv8.cr.so
+    [Configuration] Linking dynamically with shared v8 library /tmp/shared_v8/release/libv8.cr.so
     ...
 
 output while building.
 
-Set `SHARED_V8_LIB_DIR` environment variable as full absolute path to pass
-specific directory instead of default one (`adblock-android/jni/libadblockplus-binaries`).
-
 ### Building for single ARCH
 
 By default adblock-android is built for both ARM and x86 and it can be filtered when
 building end-user android application. However sometimes it can be desired to build
 "adblock-android.aar" for single ARCH.
 
 Pass `abi_arm` or `abi_x86` to build it for single arch or `abi_all` for all ARCHs:
 
     `./gradlew clean assembleAbi_arm`
     
@@ skipping 159 matching lines @@
 
 ### Building
 
 Make sure _Library_ requirements are present.
 
 In the project root directory run:
 
     ./gradlew assemble
 
 This will generate *.apk in the 'adblock-android-webviewapp/build/outputs/apk/' directory.