Make DEPS not add an extra pdfium directory.

This makes gclient config and gclient sync work.

BUG=423896
TBR=aneeshm@chromium.org

Review URL: https://codereview.chromium.org/656353002
diff --git a/DEPS b/DEPS
index 5a28c8d..b5fbbb2 100644
--- a/DEPS
+++ b/DEPS
@@ -1,17 +1,17 @@
 deps = {
-  "pdfium/build/gyp":
+  "build/gyp":
     "https://chromium.googlesource.com/external/gyp",
 
-  "pdfium/v8":
+  "v8":
     "https://chromium.googlesource.com/external/v8",
 
-  "pdfium/v8/third_party/icu":
+  "v8/third_party/icu":
     "https://chromium.googlesource.com/chromium/deps/icu46",
 }
 
 deps_os = {
   "win": {
-    "pdfium/v8/third_party/cygwin":
+    "v8/third_party/cygwin":
       "https://chromium.googlesource.com/chromium/deps/cygwin@c89e446b273697fadf3a10ff1007a97c0b7de6df",
   },
 }