Move implementation of ChildProcessSecurityPolicyImpl to c/b/shared, and wrap in c/b

content/browser/shared/DEPS

Index: content/browser/shared/DEPS
diff --git a/content/browser/shared/DEPS b/content/browser/shared/DEPS
new file mode 100644
index 0000000000000000000000000000000000000000..1f02bb0f380e96e6bdeac918d71559785a2a7e67
--- /dev/null
+++ b/content/browser/shared/DEPS
@@ -0,0 +1,32 @@
+# This directory is shared between content/browser and content/browser/loader.
+# c/b/loader is being transitioned into a separate Mojo networking service. See
+# http://crbug.com/598073.
+specific_include_rules = {
+  "child_process_security_policy_helper\.(cc|h)": [
+    "-content",
+    "+content/browser/shared",
+    "+content/public/common/resource_type.h",
+
+    # TODO: To be removed.
+    "+content/browser/site_instance_impl.h",
+    "+content/common/site_isolation_policy.h",
+    "+content/public/browser/child_process_data.h",
+    "+content/public/browser/content_browser_client.h",
+    "+content/public/browser/render_process_host.h",
+    "+content/public/common/bindings_policy.h",
+    "+content/public/common/url_constants.h",
+  ],
+  ".*test\.cc": [
+    "-content",
+    "+content/browser/shared",
+
+    "+content/browser/web_contents/web_contents_impl.h",
+    "+content/public/browser/render_process_host.h",
+    "+content/public/common/result_codes.h",
+    "+content/public/test/content_browser_test.h",
+    "+content/public/test/content_browser_test_utils.h",
+    "+content/shell/browser/shell.h",
+    "+content/public/common/url_constants.h",
+    "+content/test/test_content_browser_client.h",
+  ],
+}