Revert of Proguard warning suppresions removed

chrome/android/java/proguard.flags

Index: chrome/android/java/proguard.flags
diff --git a/chrome/android/java/proguard.flags b/chrome/android/java/proguard.flags
index 1547f015b21d090aee284f0a23afd7d340b59bed..a1751e9c18e25fb683731b13e5040135d4da799a 100644
--- a/chrome/android/java/proguard.flags
+++ b/chrome/android/java/proguard.flags
@@ -84,6 +84,9 @@
 # Google Play Services warnings are about its resources.
 -dontwarn com.google.android.gms.R**
 
+# TODO(yfriedman): Remove when crbug.com/488192 is fixed.
+-dontwarn org.apache.http.**
+
 # The support library contains references to newer platform versions.
 # Don't warn about those in case this app is linking against an older
 # platform version.  We know about them, and they are safe.
@@ -97,6 +100,8 @@
 }
 
 # Everything below this is kept because they are referenced by the test APK.
+-dontwarn javax.annotation.Nullable
+
 -keep class android.support.v7.mediarouter.R* {
   *;
 }
@@ -147,15 +152,25 @@
   public void flingViewport(long, int, int);
 }
 
+# TODO(aurimas): remove this when Google Play Services no longer uses setLatestEventInfo call
+# that was deprecated in Android M. It is save to suppress this according to b/18510449.
+-dontwarn android.app.Notification
+
+# IntentUtils uses reflection to access a method that is hidden until API level 18.
+-dontnote org.chromium.chrome.browser.util.IntentUtils
+
 # Needed to compile ChromeTest.apk
 -keep class android.support.customtabs.** {
   *;
 }
 
-# TODO(yfriedman): Remove when crbug.com/488192 is fixed.
--dontwarn org.apache.http.conn.scheme.LayeredSocketFactory
-
 # Needed to run ChromeTest.apk
 -keepnames class com.google.android.gms.common.GoogleApiAvailability {
   *;
 }
+
+#-keep public class android.net.http.SslCertificate
+#-keep public class android.webkit.WebVie
+
+#-dontwarn android.webkit.WebView
+-dontwarn android.net.http.SslCertificate