Issue 4907 - Update v8 to 5.7.278 in libadblockplus

libadblockplus.gypi

+{
+  'includes': ['common.gypi'],
+  'conditions': [
+    ['OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="solaris" \
+       or OS=="netbsd" or OS=="android"', {
+      'target_defaults': {
+        'cflags_cc': [ '-Wall', '-W', '-Wno-unused-parameter',
+                    '-Wnon-virtual-dtor', '-pedantic' ]
+      }
+    }],
+    ['OS=="linux" and target_arch=="ia32"', {
+      'target_defaults': {
+        'cflags_cc': [ '-m32' ]
+      }
+    }],
+    ['OS=="win"', {
+      'target_defaults': {
+        'conditions': [
+          ['target_arch=="x64"', {
+            'msvs_configuration_platform': 'x64'
+          }]
+        ],
+        'msvs_configuration_attributes': {
+          'CharacterSet': '1',
+        },
+        'defines': [
+          'WIN32',
+        ],
+        'link_settings': {
+          'libraries': ['-lDbgHelp'],
+        },
+      }
+    }],
+    ['OS=="mac" and target_arch=="ia32"', {
+      'xcode_settings': {
+        'ARCHS': ["i386"]
+      }
+    }],
+  ],
+
+  'target_defaults': {
+    'configurations': {
+      'Debug': {
+        'defines': [
+          'DEBUG'
+        ],
+        'msvs_settings': {
+          'VCCLCompilerTool': {
+            'conditions': [
+              ['component=="shared_library"', {
+                'RuntimeLibrary': '3',  #/MDd
+              }, {
+                'RuntimeLibrary': '1',  #/MTd
+              }
+            ]]
+          }
+        }
+      },
+      'Release': {
+        'msvs_settings': {
+          'VCCLCompilerTool': {
+            'conditions': [
+              ['component=="shared_library"', {
+                'RuntimeLibrary': '2',  #/MD
+              }, {
+                'RuntimeLibrary': '0',  #/MT
+              }
+            ]]
+          }
+        }
+      }
+    },
+  }
+}