Set up a interposing library for Carbon calls made by plugins.

chrome/chrome.gyp

 # Copyright (c) 2009 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.
 
 {
   'variables': {
     'chromium_code': 1,
     # Define the common dependencies that contain all the actual
     # Chromium functionality.  This list gets pulled in below by
     # the link of the actual chrome (or chromium) executable on
@@ skipping 434 matching lines @@
         'common/owned_widget_gtk.cc',
         'common/owned_widget_gtk.h',
         'common/page_action.h',
         'common/page_action.cc',
         'common/page_transition_types.h',
         'common/page_zoom.h',
         'common/platform_util.h',
         'common/platform_util_linux.cc',
         'common/platform_util_mac.mm',
         'common/platform_util_win.cc',
+        'common/plugin_carbon_interpose_constants_mac.h',
+        'common/plugin_carbon_interpose_constants_mac.cc',
         'common/plugin_messages.h',
         'common/plugin_messages_internal.h',
         'common/pref_member.cc',
         'common/pref_member.h',
         'common/pref_names.cc',
         'common/pref_names.h',
         'common/pref_service.cc',
         'common/pref_service.h',
         'common/process_watcher_posix.cc',
         'common/process_watcher_win.cc',
@@ skipping 2470 matching lines @@
             ['branding=="Chrome"', {
               'mac_bundle_resources': ['app/theme/google_chrome/app.icns'],
               'variables': {
                 'bundle_id': 'com.google.Chrome',
               },
               'copies': [
                 {
                   'destination': '<(PRODUCT_DIR)/<(mac_product_name).app/Contents/MacOS/',
                   'files': ['../third_party/ffmpeg/binaries/chrome/libavcodec.52.dylib',
                             '../third_party/ffmpeg/binaries/chrome/libavformat.52.dylib',
-                            '../third_party/ffmpeg/binaries/chrome/libavutil.50.dylib'],
+                            '../third_party/ffmpeg/binaries/chrome/libavutil.50.dylib',
+                            '<(PRODUCT_DIR)/plugin_carbon_interpose.dylib'],
                 },
               ],
             }, {  # else: 'branding!="Chrome"
               'mac_bundle_resources': ['app/theme/chromium/app.icns'],
               'variables': {
                 'bundle_id': 'org.chromium.Chromium',
               },
               'copies': [
                 {
                   'destination': '<(PRODUCT_DIR)/<(mac_product_name).app/Contents/MacOS/',
                   'files': ['../third_party/ffmpeg/binaries/chromium/libavcodec.52.dylib',
                             '../third_party/ffmpeg/binaries/chromium/libavformat.52.dylib',
-                            '../third_party/ffmpeg/binaries/chromium/libavutil.50.dylib'],
+                            '../third_party/ffmpeg/binaries/chromium/libavutil.50.dylib',
+                            '<(PRODUCT_DIR)/plugin_carbon_interpose.dylib'],
                 },
               ],
             }],
             ['mac_breakpad==1', {
               'variables': {
                 # A real .dSYM is needed for dump_syms to operate on.
                 'mac_real_dsym': 1,
               },
               'dependencies': [
                 '../breakpad/breakpad.gyp:dump_syms',
@@ skipping 28 matching lines @@
             #   CFBundleIdentifier of CHROMIUM_BUNDLE_ID
             #   CFBundleName of CHROMIUM_SHORT_NAME
             # Xcode then replaces these values with the branded values we set
             # as settings on the target.
             'CHROMIUM_BUNDLE_ID': '<(bundle_id)',
             'CHROMIUM_SHORT_NAME': '<(branding)',
           },
           # Bring in pdfsqueeze and run it on all pdfs
           'dependencies': [
             '../build/temp_gyp/pdfsqueeze.gyp:pdfsqueeze',
+            'interpose_dependency_shim',
           ],
           'rules': [
             {
               'rule_name': 'pdfsqueeze',
               'extension': 'pdf',
               'inputs': [
                 '<(PRODUCT_DIR)/pdfsqueeze',
               ],
               'outputs': [
                 '<(INTERMEDIATE_DIR)/pdfsqueeze/<(RULE_INPUT_ROOT).pdf',
@@ skipping 1398 matching lines @@
                 '<(PRODUCT_DIR)/<(branding).app',
               ],
               'outputs': [
                 '<(PRODUCT_DIR)/<(branding).dmg',
               ],
               'action_name': 'build_app_dmg',
               'action': ['<(build_app_dmg_script_path)', '<@(branding)'],
             },
           ],  # 'actions'
         },
+        {
+          # Dummy target to allow chrome to require plugin_carbon_interpose to
+          # build without actually linking to the resulting library.
+          'target_name': 'interpose_dependency_shim',
+          'type': 'executable',
+          'dependencies': [
+            'plugin_carbon_interpose',
+          ],
+          # In release, we end up with a strip step that is unhappy if there is
+          # no binary. Rather than check in a new file for this temporary hack,
+          # just generate a source file on the fly.
+          'actions': [
+            {
+              'action_name': 'generate_stub_main',
+              'process_outputs_as_sources': 1,
+              'inputs': [],
+              'outputs': [ '<(INTERMEDIATE_DIR)/dummy_main.c' ],
+              'action': [
+                'bash', '-c',
+                'echo "int main() { return 0; }" > <(INTERMEDIATE_DIR)/dummy_main.c'
+              ],
+            },
+          ],
+        },
+        {
+          # dylib for interposing Carbon calls in the plugin process.
+          'target_name': 'plugin_carbon_interpose',
+          'type': 'shared_library',
+          'dependencies': [
+            'chrome_dll',
+          ],
+          'sources': [
+            'browser/plugin_carbon_interpose_mac.cc',
+          ],
+          'include_dirs': [
+            '..',
+          ],
+          'link_settings': {
+            'libraries': [
+              '$(SDKROOT)/System/Library/Frameworks/Carbon.framework',
+            ],
+          },
+        },
       ]
     }, { # else: OS != "mac"
       'targets': [
         {
           'target_name': 'convert_dict',
           'type': 'executable',
           'msvs_guid': '42ECD5EC-722F-41DE-B6B8-83764C8016DF',
           'dependencies': [
             '../base/base.gyp:base',
             'convert_dict_lib',
@@ skipping 838 matching lines @@
               # Use outputs of this action as inputs for the main target build.
               # Seems as a misnomer but makes this happy on Linux (scons).
               'process_outputs_as_sources': 1,
             },
           ],  # 'actions'
         },
       ]
     }],
   ],  # 'conditions'
 }