Turning optimizations on for the bulk of webview

android_webview/apk/java/proguard.flags

 # Don't rename anything, it makes stack traces unintelligible. We only allow the
 # obfuscation pass to run so that we can discard attributes like local variable
-# tables.
--keepnames class *** { *; }
+# tables. However, we don't want to lose out on optimizations, so although they
+# can occasionally make the stack trace a bit stranger with inlining, it won't
+# make a big difference for the users seeing the stacktraces. We can always use
+# build/android/stacktrace/java_deobfuscate.py to fix the stacktrace up for us.
+-keepnames,allowoptimization class *** { *; }
 
 # The following chart was created on Aug. 11, 2016, to decide on 3 optimization
 # passes.
 # optimization passes | time | .dex size |      dirty memory
 # -----------------------------------------------------------------
 #          1          | 0:13 |  1022588  |         97772
 #          2          | 0:17 |  1019200  |         97472
 #          3          | 0:18 |  1018472  |         97424
 #          4          | 0:21 |  1018392  |         97416
 #          5          | 0:26 |  1018360  |         97416
@@ skipping 59 matching lines @@
 #TODO(hush): remove after N release. crbug.com/546762
 -keep class com.android.webview.chromium.ContentSettingsAdapter {
   public void setDisabledActionModeMenuItems(int);
   public int getDisabledActionModeMenuItems();
 }
 
 # Ignore notes and warnings about the support library, which uses reflection and
 # may reference classes no longer in the SDK.
 -dontnote android.support.**
 -dontwarn android.support.**