Add a Repack tool to scons. This is used to compile linux resources

site_scons/site_tools/chromium_builders.py

Index: site_scons/site_tools/chromium_builders.py
diff --git a/site_scons/site_tools/chromium_builders.py b/site_scons/site_tools/chromium_builders.py
index ae781d4bd5942cd0d55541044c87ed3759af7938..ec1e34785116dd83cec18608329b3f95c8fcf50b 100644
--- a/site_scons/site_tools/chromium_builders.py
+++ b/site_scons/site_tools/chromium_builders.py
@@ -8,6 +8,8 @@ wrappers around Hammer builders.  This gives us a central place for any
 customization we need to make to the different things we build.
 """
 
+import sys
+
 from SCons.Script import *
 
 import SCons.Node
@@ -163,5 +165,13 @@ def generate(env):
   env.AddMethod(ChromeMSVSProject)
   env.AddMethod(ChromeMSVSSolution)
 
+  # Add the grit tool to the base environment because we use this a lot.
+  sys.path.append(env.Dir('$CHROME_SRC_DIR/tools/grit').abspath)
+  env.Tool('scons', toolpath=[env.Dir('$CHROME_SRC_DIR/tools/grit/grit')])
+
+  # Add the repack python script tool that we use in multiple places.
+  sys.path.append(env.Dir('$CHROME_SRC_DIR/tools/data_pack').abspath)
+  env.Tool('scons', toolpath=[env.Dir('$CHROME_SRC_DIR/tools/data_pack/')])
+
 def exists(env):
   return True