split_link tool, config, and scripts for windows build

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index ed9d6d367a0412586072dbb1a222d6bc63290e8a..eae4422dea189ce773bb91280e3ec7faa8e36252 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -903,8 +903,8 @@
     # to get incremental linking to be faster in debug builds.
     'incremental_chrome_dll%': '0',
 
-    # Experimental setting to break chrome.dll in to chrome_browser.dll and
-    # chrome_child.dll.
+    # Experimental setting to break chrome.dll in to multiple parts (currently
+    # two, split primarily along browser/render lines).
     'chrome_split_dll%': '0',
 
     # The default settings for third party code for treating
@@ -1838,7 +1838,9 @@
         ],
       }],
       ['chrome_split_dll', {
-        'defines': ['CHROME_SPLIT_DLL'],

[cpu_(ooo_6.6-7.5), 2013/05/14 00:51:55]

can we put the define back? I need to execute different code in chrome.exe

[scottmg, 2013/05/14 03:35:07]

Done. I was slightly worried that it would be used incorrectly, but we can deal
with that when it happens.

+        'variables': {
+          'chrome_split_dll': '<!(python <(DEPTH)/tools/win/split_link/check_installed.py)',
+        }
       }],
       ['OS=="linux" and clang==1 and host_arch=="ia32"', {
         # TODO(dmikurube): Remove -Wno-sentinel when Clang/LLVM is fixed.