Use proguard.cfg in cronet sample apk.

components/cronet/android/sample/javatests/proguard.cfg

+# Proguard settings for CronetSampleTestApk.
+
+-dontobfuscate
+-dontoptimize
+
+# Keep classes directly accessed from test apk
+-keep class org.chromium.base.library_loader.LibraryLoaderHelper {

[mmenke, 2014/08/28 17:26:36]

Hrm...These are the ones you said you didn't understand the need for, right?

[mef, 2014/08/31 21:34:39]

Well, I understand that they have to be kept, so test app could access them
directly, but I think it weakens the proguard test.

+    void deleteWorkaroundLibrariesSynchronously(...);
+    java.io.File getWorkaroundLibDir(...);
+    boolean loadNativeLibrariesUsingWorkaroundForTesting(...);
+}
+-keep class org.chromium.base.CommandLine {
+    *;
+}
+-keep class org.chromium.base.ObserverList* {
+    *;
+}
+-keep class org.chromium.cronet_sample_apk.CronetSampleActivity {
+    *;
+}
+-keep class org.chromium.net.ChromiumUrlRequestContext {
+    *;
+}
+-keep class org.chromium.net.ChromiumUrlRequestFactory {
+    org.chromium.net.ChromiumUrlRequest createRequest(...);
+    org.chromium.net.ChromiumUrlRequestContext getRequestContext();
+}
+-keep class org.chromium.net.HttpUrlRequest {
+    *;
+}
+-keep class org.chromium.net.HttpUrlRequestFactory {
+    org.chromium.net.HttpUrlRequestFactory createFactory(...);
+    java.lang.String getName();
+}
+-keep class org.chromium.net.HttpUrlRequestFactoryConfig {
+    org.chromium.net.HttpUrlRequestFactoryConfig enableLegacyMode(...);
+}
+-keep class org.chromium.net.ChunkedWritableByteChannel {
+    *;
+}
+-keep class org.chromium.net.HttpUrlRequestListener {
+    *;
+}
+
+# Keep Test classes

[mmenke, 2014/08/28 17:26:36]

Can we just keep everything?

[mef, 2014/08/31 21:34:39]

Done.

+-keep class org.chromium.base.CommandLineTest {
+    *;
+}
+-keep class org.chromium.base.LibraryLoaderHelperTest {
+    *;
+}
+-keep class org.chromium.base.ObserverListTest {
+    *;
+}
+-keep class org.chromium.base.AdvancedMockContextTest {
+    *;
+}
+-keep class org.chromium.cronet_sample_apk.ChunkedWritableByteChannelTest {
+    *;
+}
+-keep class org.chromium.cronet_sample_apk.CronetSampleUrlTest {
+    *;
+}
+-keep class org.chromium.cronet_sample_apk.HttpUrlRequestFactoryTest {
+    *;
+}