Allow extension APIs to be compiled out.

chrome/chrome_tests.gypi

Index: chrome/chrome_tests.gypi
diff --git a/chrome/chrome_tests.gypi b/chrome/chrome_tests.gypi
index 68dc2c87cec1eff0d9d26998d87999c95933c50e..3450b068befa53fc5e83f5813b452a06b3a71e5f 100644
--- a/chrome/chrome_tests.gypi
+++ b/chrome/chrome_tests.gypi
@@ -688,6 +688,7 @@
             # resulting .res files get referenced multiple times.
             '<(SHARED_INTERMEDIATE_DIR)/chrome/browser_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/common_resources.rc',
+            '<(SHARED_INTERMEDIATE_DIR)/chrome/extensions_api_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/renderer_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/theme_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/theme_resources_standard.rc',
@@ -2156,6 +2157,14 @@
             '../v8/tools/gyp/v8.gyp:v8_shell#host',
           ],
         }],
+        ['enable_extensions==0', {
+          'sources/': [
+            ['exclude', '^browser/extensions/api/'],
+            ['exclude', '^browser/extensions/extension_idle_api_unittest.cc'],
+            ['exclude', '^browser/extensions/extension_omnibox_unittest.cc'],
+            ['exclude', '^browser/sync/glue/chrome_extensions_activity_monitor_unittest.cc'],
+          ],
+        }],
         ['use_aura==1', {
           'dependencies': [
             '../ui/aura/aura.gyp:test_support_aura',
@@ -2402,6 +2411,7 @@
             # resulting .res files get referenced multiple times.
             '<(SHARED_INTERMEDIATE_DIR)/chrome/browser_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/common_resources.rc',
+            '<(SHARED_INTERMEDIATE_DIR)/chrome/extensions_api_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/renderer_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/theme_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/theme_resources_standard.rc',
@@ -3228,6 +3238,7 @@
           'sources': [
             '<(SHARED_INTERMEDIATE_DIR)/chrome/browser_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/common_resources.rc',
+            '<(SHARED_INTERMEDIATE_DIR)/chrome/extensions_api_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/renderer_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/theme_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/theme_resources_standard.rc',
@@ -3477,6 +3488,7 @@
           'sources': [
             '<(SHARED_INTERMEDIATE_DIR)/chrome/browser_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/common_resources.rc',
+            '<(SHARED_INTERMEDIATE_DIR)/chrome/extensions_api_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/renderer_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/theme_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/theme_resources_standard.rc',
@@ -3612,6 +3624,7 @@
           'sources': [
             '<(SHARED_INTERMEDIATE_DIR)/chrome/browser_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/common_resources.rc',
+            '<(SHARED_INTERMEDIATE_DIR)/chrome/extensions_api_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/renderer_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/theme_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/theme_resources_standard.rc',
@@ -3960,6 +3973,7 @@
           'sources': [
             '<(SHARED_INTERMEDIATE_DIR)/chrome/browser_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/common_resources.rc',
+            '<(SHARED_INTERMEDIATE_DIR)/chrome/extensions_api_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/theme_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/theme_resources_standard.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome_version/other_version.rc',
@@ -4084,6 +4098,7 @@
           'sources': [
             '<(SHARED_INTERMEDIATE_DIR)/chrome/browser_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/common_resources.rc',
+            '<(SHARED_INTERMEDIATE_DIR)/chrome/extensions_api_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/theme_resources.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome/theme_resources_standard.rc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome_version/other_version.rc',