Add isolate.clean_isolated_files and use in all related recipes.

scripts/slave/recipe_modules/isolate/api.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 from slave import recipe_api
 
 
 class IsolateApi(recipe_api.RecipeApi):
   """APIs for interacting with isolates."""
 
@@ skipping 20 matching lines @@
     server during the build. This must be called early in your recipe;
     definitely before the checkout and runhooks steps.
 
     Uses current values of self.isolate_server. It should be property configured
     before calling this method if the default value (production instance of
     Isolate service) is not ok.
     """
     config.gyp_env.GYP_DEFINES['test_isolation_mode'] = 'archive'
     config.gyp_env.GYP_DEFINES['test_isolation_outdir'] = self._isolate_server
 
+  def clean_isolated_files(self, build_dir):
+    """Cleans out all *.isolated files from the build directory in
+    preparation for the compile. Needed in order to ensure isolates
+    are rebuilt properly because their dependencies are currently not
+    completely described to gyp."""
+    self.m.python(
+      'clean isolated files',
+      self.resource('find_isolated_tests.py'),
+      [
+        '--build-dir', build_dir,
+        '--clean-isolated-files'
+      ])
+
   def find_isolated_tests(self, build_dir, targets=None, **kwargs):
     """Returns a step which finds all *.isolated files in a build directory.
 
     Assigns the dict {target name -> *.isolated file hash} to the swarm_hashes
     build property. This implies this step can currently only be run once
     per recipe.
 
     If |targets| is None, the step will use all *.isolated files it finds.
     Otherwise, it will verify that all |targets| are found and will use only
     them. If some expected targets are missing, will abort the build.
@@ skipping 110 matching lines @@
         # When running the Telemetry test via an isolate we need to tell
         # run_isolated.py the hash and isolate server first, and then give
         # the isolate the test name and other arguments separately.
         prefix_args=self.runtest_args_list(isolate_name),
         args=args,
         name=name,
         revision=revision,
         webkit_revision=webkit_revision,
         master_class_name=master_class_name,
         **runtest_kwargs)