Start moving core pieces of Chrome multi-process code to src\content.

content/DEPS

Index: content/DEPS
===================================================================
--- content/DEPS	(revision 0)
+++ content/DEPS	(revision 0)
@@ -0,0 +1,25 @@
+# Do NOT add chrome to the list below.  We shouldn't be including files from
+# src/chrome in src/webkit.
+include_rules = [
+  "+net",
+
+  # TEMPORARY ONLY WHILE WE REDUCE THE DEPENDENCIES.
+  # When the src\content refactoring is complete, this will be unnecessary (and
+  # in fact, a layering violation).
+  "+chrome",
+
+  # Don't allow inclusion of these other libs we shouldn't be calling directly.
+  "-v8",
+  "-tools",
+  
+  # Allow inclusion of WebKit API files.
+  "+third_party/WebKit/Source/WebKit/chromium",
+
+  # Allow inclusion of third-party code:
+  "+third_party/mozilla",   # Mozilla interface headers.
+  "+third_party/npapi",     # NPAPI interface headers.
+  "+third_party/tcmalloc",  # tcmallo
+  "+third_party/GTM",       # Google Toolbox for Mac.
+  
+  "+ui",
+]