Include plugin.vch files for Flash Player (on official builds).

third_party/adobe/flash/flash_player.gyp

Index: third_party/adobe/flash/flash_player.gyp
diff --git a/third_party/adobe/flash/flash_player.gyp b/third_party/adobe/flash/flash_player.gyp
index 47646adef09b3f3ffb8419aac5decaf3d2c2874a..b34a14b5f4853c134f89e99d03db47c1221ffc92 100644
--- a/third_party/adobe/flash/flash_player.gyp
+++ b/third_party/adobe/flash/flash_player.gyp
@@ -16,14 +16,22 @@
             'files': [],
             'conditions': [
               [ 'OS == "linux" and target_arch == "ia32"', {
-                'files': [ 'binaries/linux/libgcflashplayer.so' ]
+                'files': [
+                  'binaries/linux/libgcflashplayer.so',
+                  'binaries/linux/plugin.vch',
+                ]
               }],
               [ 'OS == "mac"', {
-                'files':
-                    [ 'binaries/mac/Flash Player Plugin for Chrome.plugin' ]
+                'files': [
+                  'binaries/mac/Flash Player Plugin for Chrome.plugin',
+                  'binaries/mac/plugin.vch',
+                ]
               }],
               [ 'OS == "win"', {
-                'files': [ 'binaries/win/gcswf32.dll' ]
+                'files': [
+                  'binaries/win/gcswf32.dll',
+                  'binaries/win/plugin.vch',
+                ]
               }],
             ],
           }],