media: Move Widevine signature of Framework into a bundle

chrome/BUILD.gn

Index: chrome/BUILD.gn
diff --git a/chrome/BUILD.gn b/chrome/BUILD.gn
index c14a75d3e16051acb4eec704eabc23a83d9baf7f..1347539cf82d7430c707b3219caf09e56917bacd 100644
--- a/chrome/BUILD.gn
+++ b/chrome/BUILD.gn
@@ -661,8 +661,8 @@ if (is_win) {
     # Only official builds that include Widevine need the widevine
     # signature file.
     if (is_chrome_branded && enable_pepper_cdms) {
-      sources += [ "$root_out_dir/$chrome_framework_name.sig" ]
-      public_deps += [ ":sign_chrome_framework_for_widevine" ]
+      sources += [ "$root_out_dir/Widevine Signature.bundle" ]

[Greg K, 2017/03/24 00:04:41]

Can we call this Widevine Resources.bundle instead?

[xhwang, 2017/03/24 00:23:26]

I am totally flexible on the naming so I'll wait for Robert's comment before I
make the final change.

+      public_deps += [ ":widevine_signature_bundle" ]
     }
   }
 
@@ -936,6 +936,30 @@ if (is_win) {
         ":chrome_framework",
       ]
     }
+
+    bundle_data("framework_widevine_signature") {
+      sources = [
+        "$root_out_dir/$chrome_framework_name.sig",
+      ]
+
+      outputs = [
+        "{{bundle_resources_dir}}/{{source_file_part}}",
+      ]
+
+      public_deps = [
+        ":sign_chrome_framework_for_widevine",
+      ]
+    }
+
+    create_bundle("widevine_signature_bundle") {
+      output_name = "Widevine Signature.bundle"
+      bundle_root_dir = "$root_build_dir/$output_name/Contents"
+      bundle_resources_dir = bundle_root_dir + "/Resources"
+
+      deps = [
+        ":framework_widevine_signature",
+      ]
+    }
   }
 
   group("widevine_cdm_library") {