GN(android): Add scripts & runtime logic for installing _managed apks

base/BUILD.gn

 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
@@ skipping 1578 matching lines @@
       ":base_android_java_enums_srcjar",
       ":base_native_libraries_gen",
     ]
 
     deps = [
       "//third_party/android_tools:android_support_multidex_java",
       "//third_party/jsr-305:jsr_305_javalib",
     ]
 
     DEPRECATED_java_in_dir = "android/java/src"
+    if (is_debug) {
+      java_files = [
+        "android/java/debug_src/org/chromium/base/IncrementalInstall.java",
+        "android/java/debug_src/org/chromium/base/Reflect.java",
+      ]
+    } else {
+      java_files = [ "android/java/release_src/org/chromium/base/IncrementalInstall.java" ]
+    }
 
     # A new version of NativeLibraries.java (with the actual correct values)
     # will be created when creating an apk.
     jar_excluded_patterns = [
       "*/NativeLibraries.class",
       "*/NativeLibraries##*.class",
     ]
   }
 
   # GYP: //base.gyp:base_javatests
@@ skipping 69 matching lines @@
 
   # GYP: //base.gyp:base_java_unittest_support
   android_library("base_java_unittest_support") {
     deps = [
       ":base_java",
     ]
     java_files =
         [ "test/android/java/src/org/chromium/base/ContentUriTestUtils.java" ]
   }
 }