Copy libvpx from DEPS to src

DEPS

Index: DEPS
diff --git a/DEPS b/DEPS
index 9035c9b5938f99b004cc41f396000fcaba4435e5..3a3a648a0e1f533f2632a9b1646ab67b1693ab73 100644
--- a/DEPS
+++ b/DEPS
@@ -33,7 +33,6 @@ vars = {
   'googlecode_url': 'http://%s.googlecode.com/svn',
   'webkit_revision': '6089ec2766bb1e459d07d5ef28804372042b71d5', # from svn revision 201736
   'chromium_git': 'https://chromium.googlesource.com',
-  'libvpx_revision': 'a208ecae8e6fff1c0d4286bdc000d7c5efaab411',

[blundell, 2015/09/10 10:09:55]

It looks like the patch application is choking on replacing the BUILD.gn that
gets pulled in from DEPS with the BUILD.gn that this CL is adding. I'm not sure
how/whether this is supposed to work. One question: Do those two BUILD.gn files
have the same contents? If they don't, you could try again making sure that the
contents of all the files you're checking in are identical to the existing
contents in the tree. Beyond that, I don't have knowledge of how/whether it's
possible to have the trybots correctly handle the addition of a file that
already exists in the codebase but isn't checked in.

[Johann, 2015/09/10 16:42:24]

There are some differences. I started this with a previous version from what is
currently rolled. I will update and give it another shot.

   'sfntly_revision': '1bdaae8fc788a5ac8936d68bf24f37d977a13dac',
   'skia_revision': '1a9cafff044e5a352c60065e44d64e9d0eb8f92a',
   # Three lines of non-changing comments so that
@@ -185,8 +184,8 @@ deps = {
   'src/third_party/webdriver/pylib':
     Var('chromium_git') + '/external/selenium/py.git' + '@' + '5fd78261a75fe08d27ca4835fb6c5ce4b42275bd',
 
-  'src/third_party/libvpx':
-   Var('chromium_git') + '/chromium/deps/libvpx.git' + '@' +  Var('libvpx_revision'),
+  'src/third_party/libvpx/source/libvpx':
+    Var('chromium_git') + '/webm/libvpx.git' + '@' + 'da7dc5983773161a7ee148649f3be30a3a9e2cbc',
 
   'src/third_party/ffmpeg':
    Var('chromium_git') + '/chromium/third_party/ffmpeg.git' + '@' + '3651d8ef1fe8bf1fab61da6298341470402c991a',