Create top-level separate targets for browser and child dlls

chrome/chrome_dll.gypi

 # Copyright (c) 2012 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.
 {
   'conditions': [
     ['OS=="mac" or OS=="win"', {
       'targets': [
         {
           'target_name': 'chrome_dll',
           'type': 'none',
           'dependencies': [
             'chrome_main_dll',
           ],
           'conditions': [
             ['OS=="mac" and component=="shared_library"', {
               'type': 'shared_library',
               'includes': [ 'chrome_dll_bundle.gypi' ],
               'xcode_settings': {
                 'OTHER_LDFLAGS': [
                   '-Wl,-reexport_library,<(PRODUCT_DIR)/libchrome_main_dll.dylib',
                 ],
               },
             }],  # OS=="mac"
+            ['chrome_multiple_dll==1', {
+              'dependencies': [
+                'chrome_child_dll',
+              ],
+            }],
             ['incremental_chrome_dll==1', {
               # Linking to a different directory and then hardlinking back
               # to OutDir is a workaround to avoid having the .ilk for
               # chrome.exe and chrome.dll conflicting. See crbug.com/92528
               # for more information. Done on the dll instead of the exe so
               # that people launching from VS don't need to modify
               # $(TargetPath) for the exe.
               'actions': [
                 {
                   'action_name': 'hardlink_to_output',
@@ skipping 34 matching lines @@
           ]
         },
         {
           'target_name': 'chrome_main_dll',
           'type': 'shared_library',
           'variables': {
             'enable_wexit_time_destructors': 1,
           },
           'dependencies': [
             '<@(chromium_browser_dependencies)',
-            '<@(chromium_child_dependencies)',
-            '../content/content.gyp:content_worker',
             'app/policy/cloud_policy_codegen.gyp:policy',
           ],
           'conditions': [
             ['use_aura==1', {
               'dependencies': [
                 '../ui/compositor/compositor.gyp:compositor',
               ],
             }],
             ['use_ash==1', {
               'sources': [
@@ skipping 129 matching lines @@
                     'wininet.dll',
                     'winspool.drv',
                     'ws2_32.dll',
                     'wsock32.dll',
                   ],
                 },
                 'VCManifestTool': {
                   'AdditionalManifestFiles': '$(ProjectDir)\\app\\chrome.dll.manifest',
                 },
               },
-            }],  # OS=="win"
+            }],
+            ['chrome_multiple_dll!=1', {

[jam, 2013/07/17 16:23:37]

nit: I think this would be readable the other way around, i.e.

['chrome_multiple_dll==1', {
  'defines': [
    'CHROME_MULTIPLE_DLL_BROWSER',
  ],
}, {
  'dependencies': [
    'CHROME_MULTIPLE_DLL_BROWSER',

[scottmg, 2013/07/17 16:49:35]

Done.

+              'dependencies': [
+                '<@(chromium_child_dependencies)',
+                '../content/content.gyp:content_worker',
+              ],
+            }, {
+              'defines': [
+                'CHROME_MULTIPLE_DLL_BROWSER',
+              ],
+            }],
             ['OS=="mac" and component!="shared_library"', {
               'includes': [ 'chrome_dll_bundle.gypi' ],
             }],
             ['OS=="mac" and component=="shared_library"', {
               'xcode_settings': { 'OTHER_LDFLAGS': [ '-Wl,-ObjC' ], },
             }],
-            ['chrome_split_dll', {
-              'sources': [
-                # See comment in .cc for explanation.
-                'split_dll_fake_entry.cc',
-              ],
-              'msvs_settings': {
-                'VCLinkerTool': {
-                  'AdditionalOptions': ['/splitlink'],
-                },
-              }
-            }],
             ['OS=="mac"', {
               'xcode_settings': {
                 # Define the order of symbols within the framework.  This
                 # sets -order_file.
                 'ORDER_FILE': 'app/framework.order',
               },
               'sources': [
                 'app/chrome_command_ids.h',
                 'app/chrome_dll_resource.h',
                 'app/chrome_main.cc',
@@ skipping 46 matching lines @@
                 }],  # mac_breakpad_compiled_in
                 ['internal_pdf', {
                   'dependencies': [
                     '../pdf/pdf.gyp:pdf',
                   ],
                 }],
               ],  # conditions
             }],  # OS=="mac"
           ],  # conditions
         },  # target chrome_main_dll
+        {
+          'target_name': 'chrome_child_dll',
+          'type': 'shared_library',
+          'product_name': 'chrome_child',
+          'variables': {
+            'enable_wexit_time_destructors': 1,
+          },
+          'dependencies': [
+            '<@(chromium_child_dependencies)',
+            '../content/content.gyp:content_worker',
+            'policy_path_parser',
+          ],
+          'defines': [
+            'CHROME_MULTIPLE_DLL_CHILD',
+          ],
+          'sources': [
+            'app/child_stubs.cc',
+            'app/chrome_main.cc',
+            'app/chrome_main_delegate.cc',
+            'app/chrome_main_delegate.h',
+          ],
+        },  # target chrome_child_dll
       ],  # targets
     }],  # OS=="mac" or OS=="win"
     ['OS=="win"', {
       'targets': [
         {
           # This target is only depended upon on Windows.
           'target_name': 'chrome_dll_pdb_workaround',
           'type': 'static_library',
           'sources': [ 'empty_pdb_workaround.cc' ],
           'conditions': [
             ['fastbuild==0 or win_z7!=0', {
              'msvs_settings': {
               'VCCLCompilerTool': {
                 # This *in the compile phase* must match the pdb name that's
                 # output by the final link. See empty_pdb_workaround.cc for
                 # more details.
                 'DebugInformationFormat': '3',
                 'ProgramDataBaseFileName': '<(PRODUCT_DIR)/chrome.dll.pdb',
               },
              },
             }],
           ],
         },
       ],
     }],
   ],
 }