Issue 4399 - Add WebView inheritor with ad blocking

Issue 4399 - Add WebView inheritor with ad blocking

Depends on #https://codereview.adblockplus.org/29349720/
The sources can be found in https://github.com/4ntoine/libadblockplus-android/commits/issue-4399

patch set 20 (and probably the following are in https://codereview.adblockplus.org/29361445/)

[anton, 2016-09-08 13:00:12]

https://codereview.adblockplus.org/29351744/diff/29351745/libadblockplus-andr...
File libadblockplus-android/build.gradle (right):

https://codereview.adblockplus.org/29351744/diff/29351745/libadblockplus-andr...
libadblockplus-android/build.gradle:31: compileSdkVersion 19
`evaluateJavascript` in `AdblockWebView` requires android 19 min

https://codereview.adblockplus.org/29351744/diff/29351745/libadblockplus-andr...
File libadblockplus-android/pom.xml (right):

https://codereview.adblockplus.org/29351744/diff/29351745/libadblockplus-andr...
libadblockplus-android/pom.xml:71: <platform>19</platform>
`evaluateJavascript` in `AdblockWebView` requires android 19 min

https://codereview.adblockplus.org/29351744/diff/29351745/libadblockplus-andr...
File libadblockplus-android/project.properties (right):

https://codereview.adblockplus.org/29351744/diff/29351745/libadblockplus-andr...
libadblockplus-android/project.properties:12: target=android-19
`evaluateJavascript` in `AdblockWebView` requires android 19 min

https://codereview.adblockplus.org/29351744/diff/29351745/libadblockplus-andr...
File libadblockplus-android/src/org/adblockplus/android/AdblockWebView.java
(right):

https://codereview.adblockplus.org/29351744/diff/29351745/libadblockplus-andr...
libadblockplus-android/src/org/adblockplus/android/AdblockWebView.java:74:
@JavascriptInterface
makes android 17 minimum to be compiled

https://codereview.adblockplus.org/29351744/diff/29351745/libadblockplus-andr...
libadblockplus-android/src/org/adblockplus/android/AdblockWebView.java:151:
evaluateJavascript(script, null);
`evaluateJavascript` in `AdblockWebView` requires android 19 min. so i had to
modify ant/gradle/maven config to use android 19 as min for compilation. for
runtime min version is 17 (@Javascript annotation limitation)

https://codereview.adblockplus.org/29351744/diff/29351745/libadblockplus-andr...
File libadblockplus-android/src/org/adblockplus/android/AndroidWebRequest.java
(right):

https://codereview.adblockplus.org/29351744/diff/29351745/libadblockplus-andr...
libadblockplus-android/src/org/adblockplus/android/AndroidWebRequest.java:106:
if (this.elemhideEnabled || !isListedSubscriptionUrl(url) || line.indexOf('#')
== -1)
it was extremely bad idea to read bytes one-by-one because of low performance.
I've changed it to reading line-by-line and not excluding elemhide rules if not
asked for it

[anton, 2016-09-14 11:49:16]

Updated README

https://codereview.adblockplus.org/29351744/diff/29353034/libadblockplus-andr...
File libadblockplus-android-webviewapp/res/layout/activity_main.xml (right):

https://codereview.adblockplus.org/29351744/diff/29353034/libadblockplus-andr...
libadblockplus-android-webviewapp/res/layout/activity_main.xml:19:
android:text="http://worddictionary.co.uk"
i've used this site to test element hiding (at the top of the page). Consider
changing to the most suitable URL.

[anton, 2016-09-20 11:46:29]

I've implemented significant improvement (it saves about 1-2 seconds for each
loading) - now loading elemhode selectors beforehand in worker thread. When
elemhide selectors list is required - it's already ready.

https://codereview.adblockplus.org/29351744/diff/29353579/libadblockplus-andr...
File libadblockplus-android-tests/build.gradle (right):

https://codereview.adblockplus.org/29351744/diff/29353579/libadblockplus-andr...
libadblockplus-android-tests/build.gradle:16: compileSdkVersion 19
changed for consistency - lib uses 19 to compile

https://codereview.adblockplus.org/29351744/diff/29353579/libadblockplus-andr...
File libadblockplus-android-tests/project.properties (right):

https://codereview.adblockplus.org/29351744/diff/29353579/libadblockplus-andr...
libadblockplus-android-tests/project.properties:14: target=android-19
changed for consistency - lib uses 19 to compile

https://codereview.adblockplus.org/29351744/diff/29353579/libadblockplus-andr...
File libadblockplus-android-webviewapp/project.properties (right):

https://codereview.adblockplus.org/29351744/diff/29353579/libadblockplus-andr...
libadblockplus-android-webviewapp/project.properties:11: target=android-19
changed for consistency - lib uses 19 to compile

[anton, 2016-09-20 11:54:20]

https://codereview.adblockplus.org/29351744/diff/29353579/libadblockplus-andr...
File libadblockplus-android/src/org/adblockplus/android/AdblockWebView.java
(right):

https://codereview.adblockplus.org/29351744/diff/29353579/libadblockplus-andr...
libadblockplus-android/src/org/adblockplus/android/AdblockWebView.java:974:
domain = Utils.getDomain(url);
"filterEngine->GetHostFromURL(url)" is not available in java FilterEngine class.
We could add it easily if required. is it?

[anton, 2016-09-30 13:31:37]

https://codereview.adblockplus.org/29351744/diff/29355451/libadblockplus-andr...
File
libadblockplus-android-webviewapp/src/org/adblockplus/libadblockplus/webviewapp/MainActivity.java
(right):

https://codereview.adblockplus.org/29351744/diff/29355451/libadblockplus-andr...
libadblockplus-android-webviewapp/src/org/adblockplus/libadblockplus/webviewapp/MainActivity.java:82:
MainActivity.this.url.setText(url);
Philll asked for it for testing

https://codereview.adblockplus.org/29351744/diff/29355451/libadblockplus-andr...
File libadblockplus-android/src/org/adblockplus/android/AdblockWebView.java
(right):

https://codereview.adblockplus.org/29351744/diff/29355451/libadblockplus-andr...
libadblockplus-android/src/org/adblockplus/android/AdblockWebView.java:899: if
(Build.VERSION.SDK_INT >= 21)
Here we support both pre-21 and 21 with referrer (switching between impls)