Make V8DebuggerScript parameters const again.

This reverts a previous accidential edit.

Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel
Change-Id: Ib6a2e31f600de242e960171dd921387e897e3bc9
Reviewed-on: https://chromium-review.googlesource.com/951305Reviewed-by: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Commit-Queue: Stephan Herhut <herhut@chromium.org>
Cr-Commit-Position: refs/heads/master@{#51831}

src/inspector/v8-debugger-agent-impl.cc

@@ -156,8 +156,9 @@ String16 breakpointHint(const V8DebuggerScript& script, int lineNumber,
   return hint;
 }
 
-void adjustBreakpointLocation(V8DebuggerScript& script, const String16& hint,
-                              int* lineNumber, int* columnNumber) {
+void adjustBreakpointLocation(const V8DebuggerScript& script,
+                              const String16& hint, int* lineNumber,
+                              int* columnNumber) {
   if (*lineNumber < script.startLine() || *lineNumber > script.endLine())
     return;
   if (hint.isEmpty()) return;
@@ -466,7 +467,7 @@ Response V8DebuggerAgentImpl::setSkipAllPauses(bool skip) {
   return Response::OK();
 }
 
-static bool matches(V8InspectorImpl* inspector, V8DebuggerScript& script,
+static bool matches(V8InspectorImpl* inspector, const V8DebuggerScript& script,
                     BreakpointType type, const String16& selector) {
   switch (type) {
     case BreakpointType::kByUrl:

src/inspector/v8-debugger-script.cc

@@ -240,7 +240,7 @@ class ActualScript : public V8DebuggerScript {
                                    id);
   }
 
-  const String16& hash() override {
+  const String16& hash() const override {
     if (m_hash.isEmpty()) m_hash = calculateHash(source());
     DCHECK(!m_hash.isEmpty());
     return m_hash;
@@ -364,7 +364,7 @@ class WasmVirtualScript : public V8DebuggerScript {
     return true;
   }
 
-  const String16& hash() override {
+  const String16& hash() const override {
     if (m_hash.isEmpty()) {
       m_hash = m_wasmTranslation->GetHash(m_id, m_functionIndex);
     }

src/inspector/v8-debugger-script.h

@@ -60,7 +60,7 @@ class V8DebuggerScript {
   const String16& sourceURL() const;
   virtual const String16& sourceMappingURL() const = 0;
   virtual const String16& source() const = 0;
-  virtual const String16& hash() = 0;
+  virtual const String16& hash() const = 0;
   virtual int startLine() const = 0;
   virtual int startColumn() const = 0;
   virtual int endLine() const = 0;