Fix the crash: Failed to create WebAPKServiceImpl.

The crash is caused by not including the AIDL files from which the
WebApkServiceImpl is inherited in the webapk1.dex. In the build.gn, I move the
dependency of webapk_service_aidl from "deps" to "srcjar_deps", since the
.java files in the latter will be included in webapk1.dex.

BUG=645215

Review-Url: https://codereview.chromium.org/2340853002
Cr-Commit-Position: refs/heads/master@{#419017}

chrome/android/webapk/libs/runtime_library/BUILD.gn

@@ -36,9 +36,9 @@ android_library("runtime_library_for_assets_java") {
     "src/org/chromium/webapk/lib/runtime_library/WebApkServiceImpl.java",
   ]
   deps = [
-    ":webapk_service_aidl_java",
     "//chrome/android/webapk/libs/common:common_java",
   ]
+  srcjar_deps = [ ":webapk_service_aidl" ]
 }
 
 # The subset of runtime_library_from_assets_java needed for tests.