Fix out-of-memory crashes related to ArrayBuffer allocation

third_party/WebKit/Source/modules/encoding/TextEncoder.cpp

Index: third_party/WebKit/Source/modules/encoding/TextEncoder.cpp
diff --git a/third_party/WebKit/Source/modules/encoding/TextEncoder.cpp b/third_party/WebKit/Source/modules/encoding/TextEncoder.cpp
index fdb5fc5c4fbd6c3b49a1f4651409ff31baececfc..0cf6d0f07074a810001a1555bc70e9bfc9a35f36 100644
--- a/third_party/WebKit/Source/modules/encoding/TextEncoder.cpp
+++ b/third_party/WebKit/Source/modules/encoding/TextEncoder.cpp
@@ -73,7 +73,7 @@ String TextEncoder::encoding() const
     return name;
 }
 
-PassRefPtr<DOMUint8Array> TextEncoder::encode(const String& input)
+PassRefPtr<DOMUint8Array> TextEncoder::encode(const String& input, ExceptionState& exceptionState)
 {
     CString result;
     if (input.is8Bit())
@@ -84,7 +84,12 @@ PassRefPtr<DOMUint8Array> TextEncoder::encode(const String& input)
     const char* buffer = result.data();
     const unsigned char* unsignedBuffer = reinterpret_cast<const unsigned char*>(buffer);
 
-    return DOMUint8Array::create(unsignedBuffer, result.length());
+    RefPtr<DOMUint8Array> output = DOMUint8Array::createOrNull(unsignedBuffer, result.length());
+    if (!output) {
+        exceptionState.throwRangeError("Out of memory. Could not allocate the array for storing the encoded data.");
+    }
+
+    return output.release();
 }
 
 } // namespace blink