Replace all occurrences of RELEASE_ASSERT in wtf with CHECK.

third_party/WebKit/Source/wtf/dtoa/utils.h

Index: third_party/WebKit/Source/wtf/dtoa/utils.h
diff --git a/third_party/WebKit/Source/wtf/dtoa/utils.h b/third_party/WebKit/Source/wtf/dtoa/utils.h
index dcc433f1ba3fd64130546a554a4d0ff283542244..da2ba8055a95640e02ad42a7500e4b399e21ad81 100644
--- a/third_party/WebKit/Source/wtf/dtoa/utils.h
+++ b/third_party/WebKit/Source/wtf/dtoa/utils.h
@@ -165,7 +165,8 @@ namespace double_conversion {
 
         // Access individual vector elements.
         T& operator[](int index) const {
-            RELEASE_ASSERT(0 <= index && index < length_);
+            CHECK_LE(0, index);

[danakj, 2016/06/01 18:20:11]

It's a long shot but this isn't just a replacement of RELEASE_ASSERT with CHECK
since it uses 2 RELEASE_ASSERTs now essentially. Any chance this is the perf
regression?

[kotenkov, 2016/06/01 18:22:39]

Hmm, I'll run perf try jobs later today.

+            CHECK_LT(index, length_);
             return start_[index];
         }