Remove deprecated 'title' manifest attribute from unittests.

BUG=

Review URL: https://codereview.chromium.org/581853002

Cr-Commit-Position: refs/heads/master@{#295817}

extensions/test/data/manifest_tests/file_handlers_invalid_extension.json

@@ -11,15 +11,13 @@
     "text": {
       "types": [
         "text/*"
-      ],
-      "title": "Text editor"
+      ]
     },
     "image": {
       "types": [
         "image/*"
       ],
-      "extensions": "foo",
-      "title": "Image editor"
+      "extensions": "foo"
     }
   }
 }

extensions/test/data/manifest_tests/file_handlers_invalid_extension_element.json

@@ -11,8 +11,7 @@
     "text": {
       "types": [
         "text/*"
-      ],
-      "title": "Text editor"
+      ]
     },
     "image": {
       "types": [
@@ -20,8 +19,7 @@
       ],
       "extensions": [
         [".png"]
-      ],
-      "title": "Image editor"
+      ]
     }
   }
 }

extensions/test/data/manifest_tests/file_handlers_invalid_no_type_or_extension.json

@@ -9,7 +9,6 @@
   },
   "file_handlers": {
     "text": {
-      "title": "Text editor"
     }
   }
 }

extensions/test/data/manifest_tests/file_handlers_invalid_not_app.json

@@ -6,8 +6,7 @@
     "text": {
       "types": [
         "text/*"
-      ],
-      "title": "Text editor"
+      ]
     },
     "image": {
       "types": [
@@ -16,8 +15,7 @@
       "extensions": [
         ".png",
         ".gif"
-      ],
-      "title": "Image editor"
+      ]
     }
   }
 }

extensions/test/data/manifest_tests/file_handlers_invalid_too_many.json

@@ -110,8 +110,7 @@
         "97/*",
         "98/*",
         "99/*"
-      ],
-      "title": "Text editor"
+      ]
     },
     "image": {
       "types": [
@@ -219,8 +218,7 @@
       "extensions": [
         ".png",
         ".gif"
-      ],
-      "title": "Image editor"
+      ]
     }
   }
 }

extensions/test/data/manifest_tests/file_handlers_invalid_type.json

@@ -11,16 +11,14 @@
     "text": {
       "types": [
         "text/*"
-      ],
-      "title": "Text editor"
+      ]
     },
     "image": {
       "types": "bar",
       "extensions": [
         ".png",
         ".gif"
-      ],
-      "title": "Image editor"
+      ]
     }
   }
 }

extensions/test/data/manifest_tests/file_handlers_invalid_type_element.json

@@ -11,8 +11,7 @@
     "text": {
       "types": [
         42
-      ],
-      "title": "Text editor"
+      ]
     },
     "image": {
       "types": [
@@ -21,8 +20,7 @@
       "extensions": [
         ".png",
         ".gif"
-      ],
-      "title": "Image editor"
+      ]
     }
   }
 }