Exclude parts of the tree that aren't needed for iOS

DEPS

Index: DEPS
diff --git a/DEPS b/DEPS
index 2878accda383cd47daa1d5353d222cc979ced14e..020121181fd228c8b254c3c51e5d13e72fccbddc 100644
--- a/DEPS
+++ b/DEPS
@@ -416,6 +416,78 @@ deps_os = {
     # class-dump utility to generate header files for undocumented SDKs
     "src/testing/iossim/third_party/class-dump":
       "/trunk/deps/third_party/class-dump@147231",
+
+    # Code that's not needed due to not building everything (especially WebKit).
+    "src/build/util/support": None,
+    "src/chrome/test/data/extensions/api_test/permissions/nacl_enabled/bin": None,
+    "src/content/test/data/layout_tests/LayoutTests/fast/events": None,
+    "src/content/test/data/layout_tests/LayoutTests/fast/filesystem/resources": None,
+    "src/content/test/data/layout_tests/LayoutTests/fast/js/resources": None,
+    "src/content/test/data/layout_tests/LayoutTests/fast/workers": None,
+    "src/content/test/data/layout_tests/LayoutTests/http/tests/appcache": None,
+    "src/content/test/data/layout_tests/LayoutTests/http/tests/resources": None,
+    "src/content/test/data/layout_tests/LayoutTests/http/tests/websocket/tests": None,
+    "src/content/test/data/layout_tests/LayoutTests/http/tests/workers": None,
+    "src/content/test/data/layout_tests/LayoutTests/http/tests/xmlhttprequest": None,
+    "src/content/test/data/layout_tests/LayoutTests/media": None,
+    "src/content/test/data/layout_tests/LayoutTests/platform/chromium-win/fast/events": None,
+    "src/content/test/data/layout_tests/LayoutTests/platform/chromium-win/fast/workers": None,
+    "src/content/test/data/layout_tests/LayoutTests/platform/chromium-win/http/tests/workers": None,
+    "src/content/test/data/layout_tests/LayoutTests/platform/chromium-win/storage/domstorage": None,
+    "src/content/test/data/layout_tests/LayoutTests/platform/chromium/fast/events": None,
+    "src/content/test/data/layout_tests/LayoutTests/platform/chromium/fast/workers": None,
+    "src/content/test/data/layout_tests/LayoutTests/storage/indexeddb": None,
+    "src/content/test/data/layout_tests/LayoutTests/storage/domstorage": None,
+    "src/chrome/test/data/perf/canvas_bench": None,
+    "src/chrome/test/data/perf/frame_rate/content": None,
+    "src/native_client": None,
+    "src/native_client/src/third_party/ppapi": None,
+    "src/native_client_sdk/src/site_scons": None,
+    "src/sandbox/linux/seccomp-legacy": None,
+    "src/third_party/angle": None,
+    "src/third_party/bidichecker": None,
+    "src/third_party/webgl_conformance": None,
+    "src/third_party/ffmpeg": None,
+    "src/third_party/hunspell_dictionaries": None,
+    "src/third_party/hunspell": None,
+    "src/third_party/leveldatabase/src": None,
+    "src/third_party/libexif/sources": None,
+    "src/third_party/libjingle/source": None,
+    "src/third_party/libjpeg_turbo": None,
+    "src/third_party/libphonenumber/src/phonenumbers": None,
+    "src/third_party/libphonenumber/src/test": None,
+    "src/third_party/libphonenumber/src/resources": None,
+    "src/third_party/jsoncpp/source/include": None,
+    "src/third_party/jsoncpp/source/src/lib_json": None,
+    "src/third_party/libsrtp": None,
+    "src/third_party/libvpx": None,
+    "src/third_party/libyuv": None,
+    "src/third_party/mozc/session": None,
+    "src/third_party/mozc/chrome/chromeos/renderer": None,
+    "src/third_party/ots": None,
+    "src/third_party/pylib": None,
+    "src/third_party/pymox/src": None,
+    "src/third_party/safe_browsing/testing": None,
+    "src/third_party/scons-2.0.1": None,
+    "src/third_party/sfntly/cpp/src": None,
+    "src/third_party/skia/src": None,
+    "src/third_party/smhasher/src": None,
+    "src/third_party/snappy/src": None,
+    "src/third_party/swig/Lib": None,
+    "src/third_party/undoview": None,
+    "src/third_party/v8-i18n": None,
+    "src/third_party/webdriver/pylib": None,
+    "src/third_party/webpagereplay": None,
+    "src/third_party/webrtc": None,
+    "src/third_party/WebKit": None,
+    "src/third_party/WebKit/LayoutTests": None,
+    "src/third_party/WebKit/Source": None,
+    "src/third_party/WebKit/Tools/DumpRenderTree": None,
+    "src/third_party/WebKit/Tools/Scripts": None,
+    "src/third_party/WebKit/Tools/TestWebKitAPI": None,
+    "src/third_party/yasm/source/patched-yasm": None,
+    "src/tools/page_cycler/acid3": None,
+    "src/v8": None,
   },
   "mac": {
     "src/chrome/tools/test/reference_build/chrome_mac":