Initial switch to Chromium-style CHECK_* and DCHECK_* macros.

src/compiler/arm64/code-generator-arm64.cc

Index: src/compiler/arm64/code-generator-arm64.cc
diff --git a/src/compiler/arm64/code-generator-arm64.cc b/src/compiler/arm64/code-generator-arm64.cc
index 27cb4e7ae08f1ea4db1b715a711017bf40d080e5..bea4805f56132f111484b0a5a17b91728cac865d 100644
--- a/src/compiler/arm64/code-generator-arm64.cc
+++ b/src/compiler/arm64/code-generator-arm64.cc
@@ -846,7 +846,7 @@ void CodeGenerator::AssembleArchBoolean(Instruction* instr,
 
   // Materialize a full 64-bit 1 or 0 value. The result register is always the
   // last output of the instruction.
-  DCHECK_NE(0, instr->OutputCount());
+  DCHECK_NE(0u, instr->OutputCount());
   Register reg = i.OutputRegister(instr->OutputCount() - 1);
   Condition cc = FlagsConditionToCondition(condition);
   __ Cset(reg, cc);