Rename all isolate_dependency_* to files.

content/content_unittests.isolate

Index: content/content_unittests.isolate
diff --git a/content/content_unittests.isolate b/content/content_unittests.isolate
index 7f4f9c43326240f92dc105c72977b47ad0e34de0..5747c2fbb4af3c8dcf4ecfe5b426a2ead0d05895 100644
--- a/content/content_unittests.isolate
+++ b/content/content_unittests.isolate
@@ -5,7 +5,7 @@
   'conditions': [
     ['OS=="android" or OS=="linux" or OS=="mac" or OS=="win"', {
       'variables': {
-        'isolate_dependency_untracked': [
+        'files': [
           '../media/test/data/',
           'test/data/',
         ],
@@ -13,21 +13,21 @@
     }],
     ['OS=="android"', {
       'variables': {
-        'isolate_dependency_tracked': [
+        'files': [
           '<(PRODUCT_DIR)/content_shell/assets/content_shell.pak',
         ],
       },
     }],
     ['OS=="linux" or OS=="mac" or OS=="win"', {
       'variables': {
-        'isolate_dependency_tracked': [
+        'files': [
           '<(PRODUCT_DIR)/content_shell.pak',
         ],
       },
     }],
     ['OS=="linux" or OS=="mac" or OS=="win"', {
       'variables': {
-        'isolate_dependency_tracked': [
+        'files': [
           '../testing/test_env.py',
           '<(PRODUCT_DIR)/content_unittests<(EXECUTABLE_SUFFIX)',
         ],
@@ -42,7 +42,7 @@
           '--brave-new-test-launcher',
           '--test-launcher-bot-mode',
         ],
-        'isolate_dependency_tracked': [
+        'files': [
           '../testing/xvfb.py',
           '<(PRODUCT_DIR)/libffmpegsumo.so',
           '<(PRODUCT_DIR)/libosmesa.so',
@@ -51,7 +51,7 @@
     }],
     ['OS=="linux" and use_ozone==0', {
       'variables': {
-        'isolate_dependency_tracked': [
+        'files': [
           '<(PRODUCT_DIR)/xdisplaycheck<(EXECUTABLE_SUFFIX)',
         ],
       },
@@ -64,7 +64,7 @@
           '--brave-new-test-launcher',
           '--test-launcher-bot-mode',
         ],
-        'isolate_dependency_tracked': [
+        'files': [
           '<(PRODUCT_DIR)/ffmpegsumo.so',
           '<(PRODUCT_DIR)/osmesa.so',
         ],
@@ -78,7 +78,7 @@
           '--brave-new-test-launcher',
           '--test-launcher-bot-mode',
         ],
-        'isolate_dependency_tracked': [
+        'files': [
           '<(PRODUCT_DIR)/ffmpegsumo.dll',
           '<(PRODUCT_DIR)/osmesa.dll',
         ],
@@ -86,7 +86,7 @@
     }],
     ['OS=="win" and (fastbuild==0 or fastbuild==1)', {
       'variables': {
-        'isolate_dependency_untracked': [
+        'files': [
           '<(PRODUCT_DIR)/content_unittests.exe.pdb',
         ],
       },