Switch builds to clang by default for Linux and OS X.

Also adds support for ASan and sanitizer coverage.

BUG=pdfium:1,pdfium:171
R=thakis@chromium.org, thestig@chromium.org

Review URL: https://codereview.chromium.org/1406843002 .

1 files changed, 9 insertions, 0 deletions

diff --git a/DEPS b/DEPS
index 74097a67d9..8f0b55f29c 100644
--- a/DEPS
+++ b/DEPS
@@ -16,6 +16,9 @@ deps = {
   "testing/gtest":
      "https://chromium.googlesource.com/external/googletest.git@8245545b6dc9c4703e6496d1efd19e975ad2b038",
 
+  "tools/clang":
+    "https://chromium.googlesource.com/chromium/src/tools/clang",
+
   "v8":
     "https://chromium.googlesource.com/v8/v8.git@d3f97a972ffe37989fed2794d07e33f7c25f651c",
 
@@ -76,4 +79,10 @@ hooks = [
                 '-s', 'buildtools/linux64/clang-format.sha1',
     ],
   },
+  {
+    # Pull clang if needed or requested via GYP_DEFINES.
+    'name': 'clang',
+    'pattern': '.',
+    'action': ['python', 'tools/clang/scripts/update.py', '--if-needed'],
+  },
 ]