Refactor: unsigned short/unsigned -> uint16_t in third_party/blink/renderer/platform/text

- unsigned short / unsigned -> uint16_t.
- USHRT_MAX -> std::numeric_limits<uint16_t>::max()
- Reference: https://google.github.io/styleguide/cppguide.html#Integer_Types

Bug: 929986
Change-Id: If80935d74042f4f8e50275d0ec17832e19ae7046
Reviewed-on: https://chromium-review.googlesource.com/c/1490367
Commit-Queue: Miyoung Shin <myid.shin@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#636641}

third_party/blink/renderer/core/layout/line/inline_text_box.cc

@@ -315,7 +315,7 @@ void InlineTextBox::AttachLine() {
   GetLineLayoutItem().AttachTextBox(this);
 }
 
-void InlineTextBox::SetTruncation(unsigned truncation) {
+void InlineTextBox::SetTruncation(uint16_t truncation) {
   if (truncation == truncation_)
     return;
 

third_party/blink/renderer/core/layout/line/inline_text_box.h

@@ -176,7 +176,7 @@ class CORE_EXPORT InlineTextBox : public InlineBox {
 
  private:
   bool IsBoxEndIncludedInSelection() const;
-  void SetTruncation(unsigned);
+  void SetTruncation(uint16_t);
 
   void ClearTruncation() final;
   LayoutUnit PlaceEllipsisBox(bool flow_is_ltr,

third_party/blink/renderer/platform/text/truncation.h

@@ -5,7 +5,7 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_TEXT_TRUNCATION_H_
 #define THIRD_PARTY_BLINK_RENDERER_PLATFORM_TEXT_TRUNCATION_H_
 
-#include <climits>
+#include <limits>
 
 namespace blink {
 
@@ -17,10 +17,11 @@ namespace blink {
 //  representing the characters that are not truncated.
 //
 // Thus the maximum possible length of the text displayed before an ellipsis in
-// a single NGTextFragment or InlineTextBox is |USHRT_MAX - 2| to allow for the
-// no-truncation and full-truncation states.
-const unsigned short kCNoTruncation = USHRT_MAX;
-const unsigned short kCFullTruncation = USHRT_MAX - 1;
+// a single NGTextFragment or InlineTextBox is
+// |std::numeric_limits<uint16_t>::max() - 2| to allow for the no-truncation and
+// full-truncation states.
+constexpr uint16_t kCNoTruncation = std::numeric_limits<uint16_t>::max();
+constexpr uint16_t kCFullTruncation = std::numeric_limits<uint16_t>::max() - 1;
 
 }  // namespace blink