Add support for ArrayBuffers to matcherUtil.equals.

Fixes #1687

spec/core/matchers/matchersUtilSpec.js

@@ -164,7 +164,7 @@ describe("matchersUtil", function() {
 
       expect(jasmineUnderTest.matchersUtil.equals(a,b)).toBe(true);
     });
-    
+
     it("passes for equivalent Promises (GitHub issue #1314)", function() {
       if (typeof Promise === 'undefined') { return; }
 
@@ -524,6 +524,20 @@ describe("matchersUtil", function() {
       expect(jasmineUnderTest.matchersUtil.equals(mapA, mapB)).toBe(false);
     });
 
+    it("passes for ArrayBuffers with same length and content", function() {
+      var buffer1 = new ArrayBuffer(4);
+      var buffer2 = new ArrayBuffer(4);
+      expect(jasmineUnderTest.matchersUtil.equals(buffer1, buffer2)).toBe(true);
+    });
+
+    it("fails for ArrayBuffers with same length but different content", function() {
+      var buffer1 = new ArrayBuffer(4);
+      var buffer2 = new ArrayBuffer(4);
+      var array1 = new Uint8Array(buffer1);
+      array1[0] = 1;
+      expect(jasmineUnderTest.matchersUtil.equals(buffer1, buffer2)).toBe(false);
+    });
+
     describe("when running in an environment with array polyfills", function() {
       var findIndexDescriptor = Object.getOwnPropertyDescriptor(Array.prototype, 'findIndex');
       if (!findIndexDescriptor) {