Make landmines work on local builds too

DEPS

 # This file is automatically processed to create .DEPS.git which is the file
 # that gclient uses under git.
 #
 # See http://code.google.com/p/chromium/wiki/UsingGit
 #
 # To test manually, run:
 #   python tools/deps2git/deps2git.py -o .DEPS.git -w <gclientdir>
 # where <gcliendir> is the absolute path to the directory containing the
 # .gclient file (the parent of "src").
 #
@@ skipping 569 matching lines @@
   "skia",
   "testing",
   "third_party",
   "v8",
   "win8",
 ]
 
 
 hooks = [
   {
+    # This clobbers when necessary (based on get_landmines.py). It must be the
+    # first hook so that other things that get/generate into the output
+    # directory will not subsequently be clobbered.
+    "name": "landmines",
+    "pattern": ".",
+    "action": [
+        "python",
+        "src/build/landmines.py",
+    ],
+  },
+  {
     # This downloads binaries for Native Client's newlib toolchain.
     # Done in lieu of building the toolchain from scratch as it can take
     # anywhere from 30 minutes to 4 hours depending on platform to build.
     "name": "nacltools",
     "pattern": ".",
     "action": [
         "python", "src/build/download_nacl_toolchains.py",
         "--exclude", "arm_trusted",
     ],
   },
@@ skipping 204 matching lines @@
                 "src/third_party/apache-win32",
     ],
   },
   {
     # A change to a .gyp, .gypi, or to GYP itself should run the generator.
     "name": "gyp",
     "pattern": ".",
     "action": ["python", "src/build/gyp_chromium"],
   },
 ]