Turning optimizations on for the bulk of webview

android_webview/apk/java/proguard.flags

Index: android_webview/apk/java/proguard.flags
diff --git a/android_webview/apk/java/proguard.flags b/android_webview/apk/java/proguard.flags
index c94cca6949170eb92d63f2a1cc980610f42cbeb0..0c44d0332ed2c7ba9fc4d04d1fbfc1d0ef96af17 100644
--- a/android_webview/apk/java/proguard.flags
+++ b/android_webview/apk/java/proguard.flags
@@ -1,7 +1,10 @@
 # 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.