[Sync] Roll google-cache-invalidation to @78

DEPS

 vars = {
   # Use this googlecode_url variable only if there is an internal mirror for it.
   # If you do not know, use the full path while defining your new deps entry.
   "googlecode_url": "http://%s.googlecode.com/svn",
   "webkit_trunk": "http://svn.webkit.org/repository/webkit/trunk",
   "nacl_trunk": "http://src.chromium.org/native_client/trunk",
   "webkit_revision": "82870",
   "chromium_git": "http://git.chromium.org/git",
   "swig_revision": "69281",
   "nacl_revision": "4559",
@@ skipping 43 matching lines @@
   "src/third_party/hunspell":
    "/trunk/deps/third_party/hunspell@65351",
 
   "src/third_party/hunspell_dictionaries":
    "/trunk/deps/third_party/hunspell_dictionaries@79099",
 
   "src/third_party/safe_browsing/testing":
     (Var("googlecode_url") % "google-safe-browsing") + "/trunk/testing@106",
 
   "src/third_party/cacheinvalidation/files":
-    (Var("googlecode_url") % "google-cache-invalidation-api") + "/trunk@70",
+    (Var("googlecode_url") % "google-cache-invalidation-api") + "/trunk@78",
 
   "src/third_party/leveldb":
     (Var("googlecode_url") % "leveldb") + "/trunk@19",
 
   "src/third_party/snappy/src":
     (Var("googlecode_url") % "snappy") + "/trunk@25",
 
   "src/tools/gyp":
     (Var("googlecode_url") % "gyp") + "/trunk@904",
 
@@ skipping 270 matching lines @@
 ]
 
 
 hooks = [
   {
     # A change to a .gyp, .gypi, or to GYP itself should run the generator.
     "pattern": ".",
     "action": ["python", "src/build/gyp_chromium"],
   },
 ]