third_party/WebKit: fix typos found in comments

third_party/WebKit/Source/core/timing/MemoryInfo.cpp

Index: third_party/WebKit/Source/core/timing/MemoryInfo.cpp
diff --git a/third_party/WebKit/Source/core/timing/MemoryInfo.cpp b/third_party/WebKit/Source/core/timing/MemoryInfo.cpp
index ef6c06f51432cccfaf8e93573b651e97ede48b5d..813915aea4b95b5ac3e602c0a1a8263cbae194a7 100644
--- a/third_party/WebKit/Source/core/timing/MemoryInfo.cpp
+++ b/third_party/WebKit/Source/core/timing/MemoryInfo.cpp
@@ -117,7 +117,7 @@ size_t quantizeMemorySize(size_t size)
         const float scalingFactor = exp(log(largestBucketSize / sizeOfNextBucket) / numberOfBuckets);
 
         size_t nextPowerOfTen = static_cast<size_t>(pow(10, floor(log10(sizeOfNextBucket)) + 1) + 0.5);
-        size_t granularity = nextPowerOfTen / 1000; // We want 3 signficant digits.
+        size_t granularity = nextPowerOfTen / 1000; // We want 3 significant digits.
 
         for (int i = 0; i < numberOfBuckets; ++i) {
             size_t currentBucketSize = static_cast<size_t>(sizeOfNextBucket);